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 A240616 #4 Apr 10 2014 11:58:04
%S A240616 1,1,2,5,14,46,165,651,2771,12638,61398,315562,1709960,9723253,
%T A240616 57831688,358445901,2306799588,15354546420,105275618325,740481162174,
%U A240616 5321875886529,38940082552276,289132258826130,2172495189822333,16480880960094288,125993420982428718
%N A240616 Number of n-length words w over a 10-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 A240616 Column k=10 of A240608.
%K A240616 nonn
%O A240616 0,3
%A A240616 _Alois P. Heinz_, Apr 09 2014