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”).

A039718
Two-dimensional simplicial complexes on n labeled nodes.
0
1, 2, 9, 113, 6212, 3702013
OFFSET
1,2
REFERENCES
F. Harary and E. M. Palmer, Graphical enumeration, Academic Press, NY, 1973.
V. Jovovic, On the number of two-dimensional simplicial complexes (in Russian), Metody i sistemy tekhnicheskoy diagnostiki, Vypusk 16, Mezhvuzovskiy zbornik nauchnykh trudov, Izdatelstvo Saratovskogo universiteta, 1991, p. 77.
CROSSREFS
Sequence in context: A326267 A337043 A008269 * A307249 A201381 A075538
KEYWORD
hard,nonn,nice
STATUS
approved