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 A299781 #18 Apr 11 2018 06:07:38 %S A299781 11,11,20,11,42,39,11,75,124,33,11,149,273,127,15,11,249,557,314,107, %T A299781 10,11 %N A299781 Triangle read by rows: T(n,m) = number of k-uniform tilings having m different arrangements of polygons about their vertices, for k = 1..n, with 1 <= m <= n. %C A299781 Column m lists the partial sums of the m-th column of triangle A299780. %H A299781 Brian L. Galebach, <a href="http://ProbabilitySports.com/tilings.html">n-Uniform Tilings</a> %e A299781 Triangle begins: %e A299781 11; %e A299781 11, 20; %e A299781 11, 42, 39; %e A299781 11, 75, 124, 33; %e A299781 11, 149, 273, 127, 15; %e A299781 11, 249, 557, 314, 107, 10; %e A299781 ... %Y A299781 Column 1 gives A010850. %Y A299781 Leading diagonal is A068600. %Y A299781 Row sums give A299782. %Y A299781 Cf. A068599, A299780. %K A299781 nonn,tabl,hard,more %O A299781 1,1 %A A299781 _Omar E. Pol_, Mar 30 2018