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 A049736 #8 Aug 06 2021 23:51:00
%S A049736 1,10,35,100,197,366,603,896,1293,1850,2467,3236,4109,5198,6455,7880,
%T A049736 9461,11290,13327,15644,18149,20886,23975,27312,30849,34826,39127,
%U A049736 43740,48601,53910,59567,65616,71961,79042,86231,93828
%N A049736 a(n) = Sum_{i=0..n} T(i,n-i), array T as in A049735.
%K A049736 nonn
%O A049736 0,2
%A A049736 _Clark Kimberling_