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 A292966 #22 Sep 29 2017 21:31:12
%S A292966 1,1,14,543,41332,5203880,979067634,257327195587,90055440034760,
%T A292966 40484356990454979,22735298894247204310,15597865046044378254146,
%U A292966 12836943134715746781979644,12482280872844033169540407253,14157380505669130674125989779482,18524549200247005824873100782063015
%N A292966 a(n) = (2*n)! * [x^(2*n)] exp(n*(cosh(x)-1)).
%t A292966 Table[(2 n)! SeriesCoefficient[Exp[n (Cosh[x] - 1)], {x, 0, 2 n}], {n, 0, 15}]
%t A292966 Table[(-1)^n (2 n)! SeriesCoefficient[Exp[n (Cos[x] - 1)], {x, 0, 2 n}], {n, 0, 15}]
%Y A292966 Cf. A005046, A293022.
%K A292966 nonn
%O A292966 0,3
%A A292966 _Ilya Gutkovskiy_, Sep 29 2017