A294754 Number of permutations of [n] avoiding {4321, 4123, 1234}.

1, 1, 2, 6, 21, 72, 205, 396, 400, 185

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 39.

Crossrefs

Sequence in context: A116801 A148486 A294753 * A116750 A116791 A116775

Adjacent sequences: A294751 A294752 A294753 * A294755 A294756 A294757

Keyword

nonn,easy,fini,full

Author

R. J. Mathar, Nov 08 2017

Status

approved