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 A213294 #4 Jun 15 2012 03:52:41 %S A213294 1,6,36,171,711,2506,8151,25781,83728,273248,916966,3121506,10934875, %T A213294 38945256,142403783,529393936,2014819829,7790840332,30758499541, %U A213294 123255094820,503078455794,2081817569353,8756613613322,37300624224737,161213532001916,704851308055768 %N A213294 Number of n-length words w over 6-ary alphabet such that for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z. %Y A213294 Column k=6 of A213276. %K A213294 nonn %O A213294 0,2 %A A213294 _Alois P. Heinz_, Jun 08 2012