A224180 Number of permutations of length n containing exactly 1 occurrence of 12354.

0, 0, 0, 0, 1, 19, 246, 2767, 29384, 305646, 3170684, 33104118, 349462727, 3738073247, 40549242195, 446115153023, 4976319258200, 56252653681606, 643996994735079, 7461850038335967, 87447167319345337, 1035866799853591309, 12395264890256322913

Offset

1,6

Links

Table of n, a(n) for n=1..23.

Brian Nakamura, Approaches for enumerating permutations with a prescribed number of occurrences of patterns, PU. M. A. 24 (2013), 179-194

Brian Nakamura, Approaches for enumerating permutations with a prescribed number of occurrences of patterns, arXiv 1301.5080, 2013

Maple

Programs can be obtained from the link.

Crossrefs

Cf. A047889.

Sequence in context: A021504 A019512 A025927 * A318194 A019443 A021229

Adjacent sequences: A224177 A224178 A224179 * A224181 A224182 A224183

Keyword

nonn

Author

Brian Nakamura, Apr 01 2013

Status

approved