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 A172644 #7 May 09 2020 21:24:32 %S A172644 1,25653,55644337,499616140189,4307041366439901,48321459222257750541, %T A172644 596268326872362183077193,8132104885895774387439086637, %U A172644 118790606468949916540947848175709,1838094093862096792566838713252275953 %N A172644 Number of n X 11 0..2 arrays with row sums 11 and column sums n. %H A172644 R. H. Hardin, <a href="/A172644/b172644.txt">Table of n, a(n) for n=1..20</a> %Y A172644 Column k=11 of A334549. %K A172644 nonn %O A172644 1,2 %A A172644 _R. H. Hardin_, Feb 06 2010