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 A374886 #9 Sep 27 2024 04:01:20
%S A374886 0,1,64,10935,3440640,1819796875,1496658788352,1803211314966369,
%T A374886 3041248222904320000,6927551870579340989625,
%U A374886 20704007211909120000000000,79269804046766547371821983319,381109146011936063547707158953984,2261992022793941981178428306342521875
%N A374886 Obverse convolution (n^2)**(n^3); see Comments.
%C A374886 See A374848 for the definition of obverse convolution and a guide to related sequences.
%F A374886 a(n) ~ exp(5/6 - 3*n - 4*Pi*n^(1/3)/3^(3/2) + 2*Pi*n^(2/3)/sqrt(3)) * n^(3*n + 17/6). - _Vaclav Kotesovec_, Sep 13 2024
%t A374886 s[n_] := n^2; t[n_] := n^3;
%t A374886 u[n_] := Product[s[k] + t[n - k], {k, 0, n}]
%t A374886 Table[u[n], {n, 0, 20}]
%Y A374886 Cf. A000290, A000578, A374848, A376523.
%K A374886 nonn
%O A374886 0,3
%A A374886 _Clark Kimberling_, Sep 13 2024