A269114 Number of sequences with 4 copies each of 1,2,...,n avoiding the pattern 12...n.

0, 0, 1, 3199, 16140983, 142951955371, 2169397142273171, 54391509124298646609, 2179159866745975811590271, 135383475007869462606521105767, 12672963300072129619006691134123819, 1737368296284036324230735297513232295869

Offset: 0

Author

Alois P. Heinz, Feb 19 2016

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 0..100

Crossrefs

Column k=4 of A269129.

Cf. A014608, A268847.

Formula

a(n) = A014608(n) - A268847(n).