A213865 Number of words w where each letter of the n-ary alphabet occurs 5 times and 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.

1, 1, 56, 13326, 7364321, 7236515981, 10915151070941, 23060727168393236, 64157120593526429971, 224909472938181653263446, 961415357313559098150122721, 4886376056824611061263607492146, 28944590736206982153001156958037271, 196631118571992127875305845382720388771

Offset: 0

Author

Alois P. Heinz, Jun 23 2012

Keywords

• nonn

Examples

			a(0) = 1: the empty word.
a(1) = 1: aaaaa.
a(2) = 56: aaaaabbbbb, aaaababbbb, ..., baababaabb, baabababab.
		

Crossrefs

Row n=5 of A213275.