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A075095 Number of simple graphs g on n nodes with |Aut(g)| = 2. 12
0, 2, 2, 3, 11, 46, 354, 4431, 89004, 3026014, 179282248 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..11.

Zoran Maksimovic, Number of graphs on n nodes whose automorphism group orders are k, n<=11

Eric Weisstein's World of Mathematics, Graph Automorphism

CROSSREFS

Cf. A003400, A075096, A075097, A075098.

Sequence in context: A284708 A265783 A246670 * A178343 A156136 A134243

Adjacent sequences:  A075092 A075093 A075094 * A075096 A075097 A075098

KEYWORD

nonn,more

AUTHOR

Eric W. Weisstein, Aug 31 2002

EXTENSIONS

a(8) and a(9) from Eric W. Weisstein, Jun 09 2004

2 more terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 04 2008

STATUS

approved

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Last modified October 15 04:33 EDT 2019. Contains 328026 sequences. (Running on oeis4.)