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 A376051 #9 Sep 15 2024 17:40:05 %S A376051 2,6,15,105,1890,1787940,1598366509740,170318366632160334167580, %T A376051 4144049430320998104357181695998976956266032780, %U A376051 903849772681252048573050443706467978048458261112444760582668531605732820714345840478376380 %N A376051 a(n) is the denominator of the sum S(n) defined in A376050. %e A376051 The first few values of S(n) are 1/2, 5/6, 14/15, 103/105, 1889/1890, 1787939/1787940, 1598366509739/1598366509740, ... Note S(4) is exceptional, in that the numerator and denominator differ by 2 instead of 1. %Y A376051 Cf. A374663, A375516, A375531, A375532, A375781, A375522, A376048, A376049, A376050. %K A376051 nonn,base,frac %O A376051 1,1 %A A376051 _N. J. A. Sloane_, Sep 13 2024