A202228 Number of permutations avoiding the consecutive pattern 52341.

1, 2, 6, 24, 119, 708, 4914, 38982, 347869, 3449252, 37620655, 447627708, 5769915215, 80095218258, 1191261103432, 18898879914026, 318562100279543, 5685592510437500, 107112079379106657, 2124112747338010252, 44228883790175992996, 964801076036155315318

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 52341. It is the same as the number of permutations which avoid 14325.

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.