A264320 Number of permutations of [n] with exactly one occurrence of the consecutive pattern 3412.

1, 10, 88, 794, 7639, 79164, 885128, 10657588, 137752283, 1904555934, 28068929900, 439495830750, 7288494061255, 127654030808304, 2355066281798588, 45655570757683888, 927984709909530539, 19735811069218548106, 438344811235148801632, 10149979837759608190794

Offset: 4

Author

Alois P. Heinz, Nov 11 2015

Keywords

• nonn

Examples

			a(4) = 1: 3412.
a(5) = 10: 14523, 24513, 34125, 34512, 35124, 43512, 45123, 45132, 45231, 53412.
		

Links

• Alois P. Heinz, Table of n, a(n) for n = 4..200

Crossrefs

Column k=1 of A264319.