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 A240615 #4 Apr 10 2014 12:08:29
%S A240615 1,1,2,5,14,46,165,651,2771,12638,61397,315507,1708420,9693168,
%T A240615 57360909,352099643,2229930365,14494768448,96229497555,649761232948,
%U A240615 4446218110646,30745322129155,214353097904732,1504152530715607,10609439744527674,75146372454242527
%N A240615 Number of n-length words w over a 9-ary alphabet such that w is empty or a prefix z concatenated with letter a_i and i=1 or 0 < #(z,a_{i-1}) >= #(z,a_i), where #(z,a_i) counts the occurrences of the i-th letter in z.
%Y A240615 Column k=9 of A240608.
%K A240615 nonn
%O A240615 0,3
%A A240615 _Alois P. Heinz_, Apr 09 2014