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 A050159 #8 Aug 19 2022 13:39:30
%S A050159 0,1,1,1,2,3,2,5,9,10,5,14,28,34,35,14,42,90,117,125,126,42,132,297,
%T A050159 407,451,461,462,132,429,1001,1430,1638,1703,1715,1716,429,1430,3432,
%U A050159 5070,5980,6330,6420,6434,6435,1430,4862,11934,18122
%N A050159 T(n,k) = S(2n-1,n-1,k-1), 0<=k<=n, n >= 0, array S as in A050157.
%F A050159 T(n, k) = Sum_{t(n, j): 0<=j<=k}, array t as in A050144.
%e A050159 Rows: {0}; {1,1}; {1,2,3}; ...
%Y A050159 Cf. A050144, A050157.
%K A050159 nonn,tabl
%O A050159 0,5
%A A050159 _Clark Kimberling_