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 A050160 #12 Aug 09 2021 01:11:56
%S A050160 0,1,1,2,3,4,5,9,14,15,14,28,48,55,56,42,90,165,200,209,210,132,297,
%T A050160 572,726,780,791,792,429,1001,2002,2639,2912,2989,3002,3003,1430,3432,
%U A050160 7072,9620,10880,11320,11424,11439,11440,4862,11934,25194,35190,40698,42942
%N A050160 T(n,k) = S(2n,n-1,k-1), 0 <= k <= n, n >= 0, array S as in A050157.
%F A050160 T(n, k) = Sum_{j=0..k} t(n, j), array t as in A050145.
%e A050160 Rows: {0}; {1,1}; {2,3,4}; ...
%K A050160 nonn,tabl
%O A050160 0,4
%A A050160 _Clark Kimberling_
%E A050160 a(9) corrected and more terms from _Sean A. Irvine_, Aug 08 2021