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 A381011 #10 Apr 15 2025 17:23:18
%S A381011 1,0,2,-6,-14,-10,32,76,-80,-340,-200,590,2302,1890,-3470,-11468,
%T A381011 -16254,5244,57406,109340,81396,-158664,-550388,-829558,-359856,
%U A381011 1509570,4333256,6198660,2628406,-10133230,-30439512,-46214582,-29696680,45589368
%N A381011 a(n) = [(x*y)^n] Product_{k>=1} (1 - x^k - y^k)^k.
%t A381011 Table[SeriesCoefficient[Product[(1 - x^k - y^k)^k, {k, 1, n}], {x, 0, n}, {y, 0, n}], {n, 0, 33}]
%Y A381011 Cf. A073592, A322213, A322214.
%K A381011 sign
%O A381011 0,3
%A A381011 _Ilya Gutkovskiy_, Apr 10 2025