A294760 Number of permutations of [n] avoiding {4321, 1324, 1234}.

1, 1, 2, 6, 21, 73, 215, 484, 669, 334

Offset

0,3

Links

Table of n, a(n) for n=0..9.

D. Callan, T. Mansour, Enumeration of small Wilf classes avoiding 1324 and two other 4-letter patterns, arXiv:1705.00933 [math.CO] (2017), Table 2 No 59.

Crossrefs

Sequence in context: A116737 A360153 A294759 * A116834 A116762 A116803

Adjacent sequences: A294757 A294758 A294759 * A294761 A294762 A294763

Keyword

nonn,easy,fini,full

Author

R. J. Mathar, Nov 08 2017

Status

approved