A239923 Number of unrooted maps with n edges of (orientable) genus 9.

324039613564554401, 92075738368876748710, 13524920870667446819490, 1368913666872922446728390, 107367565606418008964576338, 6957847952983327441248445908, 387883525432376769353915075571

Offset

18,1

Links

Table of n, a(n) for n=18..24.

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=9 of A379438.

Cf. A238359 (rooted).

Cf. A006386, A104595, A104596, A215019, A239918, A239919, A239921, A239922.

Sequence in context: A230668 A228455 A183062 * A104838 A376261 A172565

Adjacent sequences: A239920 A239921 A239922 * A239924 A239925 A239926

Keyword

nonn

Author

Alain Giorgetti, Mar 29 2014

Status

approved