A269127 Number of sequences with n copies each of 1,2,...,9 avoiding the pattern 12...9.

1, 362879, 12498099730471, 1072323973643442736211, 135383475007869462606521105767, 20584293980310480336378076914369061769, 3413618982844502796240740610191874586048936771, 586566986371155102435901052470650279895779757665905993

Offset: 0

Author

Alois P. Heinz, Feb 19 2016

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 0..50

Crossrefs

Row n=9 of A269129.

Cf. A071551, A268845.

Formula

a(n) = A071551(n) - A268845(n).