A239922 Number of unrooted maps with n edges of (orientable) genus 8.

352755124921122, 86116887841273186, 10954787876407932816, 967146341367928365308, 66599326875830666763353, 3811863659211606517416928, 188710867264106506704457217, 8303453286421604392505856232, 331175730212422476849562734689, 12151338155016475304016716988472

Offset

16,1

Links

Andrew Howroyd, Table of n, a(n) for n = 16..60

Timothy R. S. Walsh, Alain Giorgetti, Alexander Mednykh, Enumeration of unrooted orientable maps of arbitrary genus by number of edges and vertices, Discrete Math. 312 (2012), no. 17, 2660--2671. MR2935417.

Crossrefs

Column k=8 of A379438.

Cf. A238358 (rooted), A348801 (unsensed).

Cf. A006386, A104595, A104596, A215019, A239918, A239919, A239921.

Sequence in context: A082589 A371834 A375012 * A011528 A172542 A198803

Adjacent sequences: A239919 A239920 A239921 * A239923 A239924 A239925

Keyword

nonn

Author

Alain Giorgetti, Mar 29 2014

Extensions

a(24) onwards added by Andrew Howroyd, Jan 18 2025

Status

approved