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 A374850 #4 Aug 17 2024 23:09:50
%S A374850 4,9,50,576,12150,529984,46080000,8227578436,3001814235000,
%T A374850 2250930099585024,3467943896484375000,10990843331383915704576,
%U A374850 71660705425234329600000000,961449528856034873335986864784,26545636210087637565464331562500000
%N A374850 Obverse convolution A000032**A000032; see Comments.
%C A374850 See A374848 for the definition of obverse convolution and a guide to related sequences. a(2k+1) is a square for k>=0.
%t A374850 s[n_] := LucasL[n]; t[n_] := LucasL[n];
%t A374850 u[n_] := Product[s[k] + t[n - k], {k, 0, n}]
%t A374850 Table[u[n], {n, 0, 20}]
%Y A374850 Cf. A000045, A374848.
%K A374850 nonn
%O A374850 0,1
%A A374850 _Clark Kimberling_, Aug 05 2024