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 A120287 #6 Oct 13 2024 07:06:59
%S A120287 1,17,355,7715,203413,492527,49601051,1823359051,16684019407,
%T A120287 186004308017,22757931053507,298630937704541,50872538998767329,
%U A120287 51223731720255509,103063783892301061,7045407930432340853
%N A120287 Numerator of 1/n^3 + 2/(n-1)^3 + 3/(n-2)^3 +...+ (n-1)/2^3 + n.
%C A120287 p divides a(p-1) and a(p-2) for prime p>3.
%C A120287 Numerators of the Eulerian numbers T(-3,k) for k = 0,1..., if T(n,k) is extended to negative n by the recurrence T(n,k) = (k+1)*T(n-1,k) + (n-k)*T(n-1,k-1) (indexed as in A173018). - _Michael J. Collins_, Oct 10 2024
%F A120287 a(n) = numerator[Sum[Sum[1/i^3,{i,1,k}],{k,1,n}]].
%t A120287 Numerator[Table[Sum[Sum[1/i^3,{i,1,k}],{k,1,n}],{n,1,25}]]
%Y A120287 Cf. A001008, A007406, A007407, A007408, A007410.
%K A120287 frac,nonn
%O A120287 1,2
%A A120287 _Alexander Adamchuk_, Jul 07 2006