Summing 1/(n^2) for n=1,2,3,4,5,...
with 1 thousand terms, sum=1.6439345666815615
with 2 thousand terms, sum=1.6444341918273961
with 3 thousand terms, sum=1.6446007890642824
with 4 thousand terms, sum=1.6446840980956319
with 5 thousand terms, sum=1.6447340868469014
with 6 thousand terms, sum=1.6447674140696813
with 7 thousand terms, sum=1.6447912199089672
with 8 thousand terms, sum=1.6448090746604027
with 9 thousand terms, sum=1.64482296190973
with 10 thousand terms, sum=1.6448340718480652
with 11 thousand terms, sum=1.6448431618894268
with 12 thousand terms, sum=1.644850736987022
with 13 thousand terms, sum=1.6448571467298112
with 14 thousand terms, sum=1.6448626408277622
with 15 thousand terms, sum=1.6448674024037366
with 16 thousand terms, sum=1.6448715688013131
with 17 thousand terms, sum=1.6448752450488864
with 18 thousand terms, sum=1.644878512835852
with 19 thousand terms, sum=1.6448814366542994
with 20 thousand terms, sum=1.6448840680982086
with 21 thousand terms, sum=1.6448864489343826
with 22 thousand terms, sum=1.6448886133358191
with 23 thousand terms, sum=1.644890589532528
with 24 thousand terms, sum=1.644892401049608
with 25 thousand terms, sum=1.6448940676482189
with 26 thousand terms, sum=1.6448956060494053
with 27 thousand terms, sum=1.6448970304970567
with 28 thousand terms, sum=1.6448983532002608
with 29 thousand terms, sum=1.6448995846841301
with 30 thousand terms, sum=1.6449007340704436
with 31 thousand terms, sum=1.644901809303995
with 32 thousand terms, sum=1.6449028173365032
with 33 thousand terms, sum=1.6449037642770534
with 34 thousand terms, sum=1.6449046555160396
with 35 thousand terms, sum=1.6449054958278129
with 36 thousand terms, sum=1.644906289456247
with 37 thousand terms, sum=1.6449070401864283
with 38 thousand terms, sum=1.6449077514050099
with 39 thousand terms, sum=1.6449084261513152
with 40 thousand terms, sum=1.6449090671607263
with 41 thousand terms, sum=1.6449096769017646
with 42 thousand terms, sum=1.6449102576078671
with 43 thousand terms, sum=1.644910811304694
with 44 thousand terms, sum=1.6449113398337734
with 45 thousand terms, sum=1.6449118448729274
with 46 thousand terms, sum=1.6449123279541007
with 47 thousand terms, sum=1.644912790478841
with 48 thousand terms, sum=1.6449132337319199
with 49 thousand terms, sum=1.6449136588932225
with 50 thousand terms, sum=1.6449140670482416
with 51 thousand terms, sum=1.644914459197342
with 52 thousand terms, sum=1.644914836263928
with 53 thousand terms, sum=1.644915199101723
with 54 thousand terms, sum=1.6449155485012021
with 55 thousand terms, sum=1.6449158851953594
with 56 thousand terms, sum=1.6449162098648322
with 57 thousand terms, sum=1.644916523142497
with 58 thousand terms, sum=1.644916825617572
with 59 thousand terms, sum=1.6449171178393431
with 60 thousand terms, sum=1.6449174003204687
with 61 thousand terms, sum=1.6449176735399993
with 62 thousand terms, sum=1.644917937946065
with 63 thousand terms, sum=1.6449181939583537
with 64 thousand terms, sum=1.6449184419703227
with 65 thousand terms, sum=1.6449186823512076
with 66 thousand terms, sum=1.6449189154478814
with 67 thousand terms, sum=1.6449191415864979
with 68 thousand terms, sum=1.6449193610740318
with 69 thousand terms, sum=1.6449195741996472
with 70 thousand terms, sum=1.6449197812360068
with 71 thousand terms, sum=1.6449199824403962
with 72 thousand terms, sum=1.6449201780558143
with 73 thousand terms, sum=1.64492036831194
with 74 thousand terms, sum=1.6449205534260445
with 75 thousand terms, sum=1.6449207336038023
with 76 thousand terms, sum=1.6449209090400791
with 77 thousand terms, sum=1.6449210799195924
with 78 thousand terms, sum=1.6449212464176075
with 79 thousand terms, sum=1.6449214087005113
with 80 thousand terms, sum=1.6449215669263713
with 81 thousand terms, sum=1.6449217212454461
with 82 thousand terms, sum=1.64492187180066
with 83 thousand terms, sum=1.6449220187280598
with 84 thousand terms, sum=1.6449221621572072
with 85 thousand terms, sum=1.6449223022115704
with 86 thousand terms, sum=1.6449224390088772
with 87 thousand terms, sum=1.6449225726614334
with 88 thousand terms, sum=1.644922703276452
with 89 thousand terms, sum=1.6449228309563146
with 90 thousand terms, sum=1.6449229557988638
with 91 thousand terms, sum=1.6449230778976391
with 92 thousand terms, sum=1.644923197342106
with 93 thousand terms, sum=1.6449233142178883
with 94 thousand terms, sum=1.6449234286069654
with 95 thousand terms, sum=1.6449235405878626
with 96 thousand terms, sum=1.644923650235836
with 97 thousand terms, sum=1.6449237576230367
with 98 thousand terms, sum=1.6449238628186738
with 99 thousand terms, sum=1.644923965889158
with 100 thousand terms, sum=1.6449240668982423