This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A120341 #5 Mar 30 2012 18:36:04 %S A120341 1,3,8,15,71,105,886,1155,12673,15015,255802,285285,18447227,20255235, %T A120341 1366902806,1478632155,109463953829,116811940245,15332301522476, %U A120341 16236859694055,6624458815881211,6998086528137705,2875388753804702068 %N A120341 Sequence of pairs numerator(s(n)), denominator(s(n)) where s(n) is the n-th partial sum of 1/A119753(n). %C A120341 There are only 66 terms of A119753 known and s(66) is 0.95578109643864566820083634846514203365246166270989 to 50 decimal places. What is sum(1/A119753(k),k=1..infinity)? %F A120341 a(2n-1) = numerator(s(n)), a(2n)=denominator(s(n)), where s(n)=sum(1/A119753(k),k=1..n). %e A120341 a(5)=71, a(6)=105 since s(3)=1/3+1/5+1/7=71/105. %Y A120341 Cf. A119751, A119753. %K A120341 nonn %O A120341 1,2 %A A120341 _Walter Kehowski_, Jun 23 2006 %E A120341 This is not really a sequence. The standard OEIS convention would be to split this into two cross-referenced sequences with keyword "frac". - _N. J. A. Sloane_, Jul 22 2006