A295263 Number of total cyclic orders Z on {1, ..., n+2} such that (i, i+1, i+2) in Z for 1 <= i <= n, and (n+1,n+2,1) in Z.

1, 1, 3, 11, 38, 169, 899, 5047, 31914, 226205

Offset

1,3

Links

Table of n, a(n) for n=1..10.

Sanjay Ramassamy, Extensions of partial cyclic orders, Euler numbers and multidimensional boustrophedons, arXiv:1706.03386 [math.CO], 2017.

Crossrefs

Sequence in context: A149060 A151468 A289989 * A018961 A178624 A027528

Adjacent sequences: A295260 A295261 A295262 * A295264 A295265 A295266

Keyword

nonn,more

Author

Eric M. Schmidt, Nov 19 2017

Status

approved