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 A298986 #5 Feb 01 2018 20:56:46
%S A298986 1,-1,-4,9,48,100,-756,-3479,-1600,24462,225900,364573,-643536,
%T A298986 -9251736,-36989316,-32397975,165039872,1725828525,5338814652,
%U A298986 8082713829,-26321848400,-233434232766,-811526778964,-1731126953532,1151302859712,23632432765000,113461901639788,287935019845749
%N A298986 a(n) = [x^n] Product_{k>=1} (1 - n*x^k)^k.
%t A298986 Table[SeriesCoefficient[Product[(1 - n x^k)^k, {k, 1, n}], {x, 0, n}], {n, 0, 27}]
%Y A298986 Cf. A073592, A266964, A292132, A297324, A298985, A298987, A298988.
%K A298986 sign
%O A298986 0,3
%A A298986 _Ilya Gutkovskiy_, Jan 31 2018