A268565 Arises in counting maps on a surface: see Coquereaux-Zuber (2015) for precise definition.

1, 5, 15, 97, 592

Offset

1,2

Links

Table of n, a(n) for n=1..5.

R. Coquereaux, J.-B. Zuber, Maps, immersions and permutations, arXiv preprint arXiv:1507.03163, 2015. Also J. Knot Theory Ramifications 25, 1650047 (2016), DOI: http://dx.doi.org/10.1142/S0218216516500474

Crossrefs

Sequence in context: A184438 A134135 A292279 * A358197 A121869 A118412

Adjacent sequences: A268562 A268563 A268564 * A268566 A268567 A268568

Keyword

nonn,more

Author

N. J. A. Sloane, Mar 03 2016

Status

approved