A213868 Number of words w where each letter of the n-ary alphabet occurs 8 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, 1859, 48349015, 5795673908453, 1953740543358042205, 1409438188685787895321841, 1835364055105945091130559202709, 3847028733161627562733350467148495403, 11963401430840044468894095677711389363239184, 51960277212541922189750307005207837858451630919380

Offset: 0

Author

Alois P. Heinz, Jun 23 2012

Keywords

• nonn

Examples

			a(0) = 1: the empty word.
a(1) = 1: aaaaaaaa.
a(2) = 1859: aaaaaaaabbbbbbbb, aaaaaaababbbbbbb, ..., baabababababaabb, baababababababab.
		

Crossrefs

Row n=8 of A213275.