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 A369373 #4 Jan 22 2024 05:56:15 %S A369373 1,19,701,33873,1884211,113091013,7138569079,466998324373, %T A369373 31378587089717,2152644125539205,150149036955370989, %U A369373 10616242785424087153,759159709650751045807,54809160248598728775119,3989668904561505824038609,292488794939698331845055779,21576667915867159070829849217 %N A369373 a(n) is the constant term in expansion of Product_{k=1..n} (x^k + 1 + 1/x^k)^4. %t A369373 Table[Coefficient[Product[(x^k + 1 + 1/x^k)^4, {k, 1, n}], x, 0], {n, 0, 16}] %Y A369373 Cf. A007576, A124996, A156181, A369372. %K A369373 nonn %O A369373 0,2 %A A369373 _Ilya Gutkovskiy_, Jan 21 2024