A343089 Number of nonseparable rooted toroidal maps with n edges.

1, 8, 59, 420, 2940, 20384, 140479, 964184, 6598481, 45059872, 307197620, 2091615760, 14226362200, 96680047568, 656559634503, 4456100344560, 30228597199443, 204971912361512, 1389342336011059, 9414200925647540, 63772600432265968, 431892497914345472

Offset

2,2

Links

Andrew Howroyd, Table of n, a(n) for n = 2..100

Crossrefs

Row sums of A342989.

Cf. A006300.

Sequence in context: A047867 A002538 A263503 * A112424 A190977 A254662

Adjacent sequences: A343086 A343087 A343088 * A343090 A343091 A343092

Keyword

nonn

Author

Andrew Howroyd, Apr 04 2021

Status

approved