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 A382783 #4 Apr 05 2025 17:26:45
%S A382783 2,16,64,768,3072,61440,122880,20643840,9175040,2972712960,5945425920,
%T A382783 2615987404800,5231974809600,816188070297600,108825076039680,
%U A382783 2742391916199936000,10969567664799744000,745930601206382592000,1491861202412765184000,2040866124900662771712000
%N A382783 Denominators arising in the expansion of Sum_{k>=1} (1/(4k^2-1)^n) in even powers of Pi.
%C A382783 See A382782 for an explanation of this sequence.
%Y A382783 Cf. A382782.
%K A382783 nonn
%O A382783 1,1
%A A382783 _Sean A. Irvine_, Apr 04 2025