login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Number of triangulated surfaces with n vertices.
4

%I #14 Sep 21 2021 19:17:26

%S 1,1,3,9,43,655,42426,11590894,12561206794

%N Number of triangulated surfaces with n vertices.

%H F. H. Lutz, <a href="https://arxiv.org/abs/math/0610022">Enumeration and random realization of triangulated surfaces</a>, arXiv:math/0610022 [math.CO], 2006-2007.

%H F. H. Lutz, <a href="https://page.math.tu-berlin.de/~lutz/stellar/">The Manifold Page</a>.

%H T. Sulanke and F. H. Lutz, <a href="https://arxiv.org/abs/math/0610022">Isomorphism free lexicographic enumeration of triangulated surfaces and 3-manifolds</a>, arXiv:math/0610022 [math.CO], 2006-2007.

%Y Cf. A000109.

%K nonn,hard,more,nice

%O 4,3

%A _Ralf Stephan_, Jun 17 2005

%E a(11)-a(12) from Herman Jamke (hermanjamke(AT)fastmail.fm), Nov 08 2006