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Total number of unlabeled simple maps on the sphere with n vertices.
0

%I #16 May 20 2024 13:50:11

%S 1,1,2,6,25,179,2014,31178,580555,12046072,267836680,6258809085,

%T 151983244000

%N Total number of unlabeled simple maps on the sphere with n vertices.

%C Computed by Brendan McKay.

%C a(n) is the same as the total number of distinct spherical drawings of connected graphs with n vertices.

%Y Cf. A372853 (uniquely embeddable connected graphs).

%Y Cf. A372854 (largest numbers of planar embeddings for connected graphs).

%K nonn,more

%O 1,3

%A _Eric W. Weisstein_, May 19 2024