OFFSET
1,2
COMMENTS
a(n) is the number of permutations on [n] that avoid the consecutive pattern 41523. It is the same as the number of permutations which avoid 24153, 31524, 35142, 42513, 25143, 32514 or 34152.
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
KEYWORD
nonn
AUTHOR
Ray Chandler, Dec 15 2011
STATUS
approved