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 A322197 #10 Dec 30 2018 09:48:27
%S A322197 1,2,3,6,15,46,168,710,3405,18270,108438,705334,4989075,38126414,
%T A322197 313034088,2748039078,25685633625,254672239678,2669718010218,
%U A322197 29502715813142,342784073066655,4177349457737262,53279132429530428,709785147883342726,9858698782067445765,142530638751865262366,2141519206261256136318,33391802751245681847030,539616796036523449056555,9026558167976152019922190
%N A322197 Antidiagonal sums of square table A322190.
%C A322197 Table A322190 gives the coefficients of x^n*y^k/(n!*k!) in (cosh(x)*cosh(y) + sinh(x) + sinh(y)) / (1 - sinh(x)*sinh(y)).
%H A322197 Paul D. Hanna, <a href="/A322197/b322197.txt">Table of n, a(n) for n = 0..150</a>
%F A322197 a(n) ~ Pi * n^(n+1) / (2^(n - 3/4) * exp(n) * (log(1+sqrt(2)))^(n + 3/2)). - _Vaclav Kotesovec_, Dec 30 2018
%t A322197 nmax = 30;
%t A322197 t[n_, k_] := SeriesCoefficient[(Cosh[x] Cosh[y] + Sinh[x] + Sinh[y])/(1 - Sinh[x] Sinh[y]), {x, 0, n}, {y, 0, k}] n! k!;
%t A322197 a[n_] := Sum[t[n - k, k], {k, 0, n}];
%t A322197 Table[a[n], {n, 0, nmax}] (* _Jean-François Alcover_, Dec 29 2018 *)
%Y A322197 Cf. A244920.
%K A322197 nonn
%O A322197 0,2
%A A322197 _Paul D. Hanna_, Dec 20 2018