OFFSET
1,4
LINKS
Miklos Bona, Michael Cory, Cyclic Permutations Avoiding Pairs of Patterns of Length Three, arXiv:1805.05196 [math.CO], 2018.
EXAMPLE
For n=4, there are two such permutations, 4123 and 4312.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Miklos Bona, Aug 05 2019
EXTENSIONS
a(1)=1 (confirmed by author) inserted by Alexander Burstein, Jul 20 2020
STATUS
approved