A202234 Number of permutations avoiding the consecutive pattern 35124.

1, 2, 6, 24, 119, 708, 4914, 38982, 347898, 3449832, 37630215, 447778848, 5772349056, 80135742750, 1191964110777, 18911623686552, 318803730114225, 5690383738630956, 107211361385886516, 2126260453008788598, 44277328711513910475, 965939103520765611768

Offset: 1

Author

Ray Chandler, Dec 15 2011

Keywords

• nonn

Comments

a(n) is the number of permutations on [n] that avoid the consecutive pattern 35124. It is the same as the number of permutations which avoid 24513, 31542 or 42153.

Links

• Ray Chandler, Table of n, a(n) for n = 1..40
• A. Baxter, B. Nakamura, and D. Zeilberger. Automatic generation of theorems and proofs on enumerating consecutive Wilf-classes

Crossrefs

Cf. A177523, A202213-A202236.