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 A101632 #5 May 29 2014 16:28:09 %S A101632 1,33,924,17556,1141140,1025884860,17440042620,715041747420, %T A101632 16445960190660,115121721334620,345365164003860,1242969225249892140, %U A101632 382452069307659120,27154096920843797520,1004701586071220508240 %N A101632 Denominator of partial sums of a certain series. %C A101632 The numerators are given in A101631. %F A101632 a(n)=denominator(s(n)) with s(n)=24*sum(1/((5*k-1)*k*(5*k+1)), k=1..n). %t A101632 Denominator[24*Accumulate[Table[1/((5k-1)k(5k+1)),{k,15}]]] (* _Harvey P. Dale_, May 29 2014 *) %K A101632 nonn,frac,easy %O A101632 1,2 %A A101632 _Wolfdieter Lang_, Dec 23 2004