Number of permutations that lie in the cyclic closure of Av(132)--i.e., at least one cyclic rotation of the permutation avoids the pattern 132.

A141253

Number of permutations that lie in the cyclic closure of Av(132)--i.e., at least one cyclic rotation of the permutation avoids the pattern 132.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =24a(4) =100a(5) =408a(6) =1631a(7) =6440a(8) =25263a(9) =98790a(10) =385803a(11) =1506156a(12) =5881057a(13) =22974406a(14) =89804910a(15) =351279584a(16) =1375035208a(17) =5386203792a(18) =21113167346a(19) =82816267480a(20) =325055630634

External references