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A085620
Number of 2-graphs with n nodes and transitive automorphism group.
1
2, 2, 4, 8, 9, 16
(list; graph; refs; listen; history; text; internal format)
OFFSET
4,1
LINKS
Table of n, a(n) for n=4..9.
F. C. Bussemaker, R. A. Mathon and J. J. Seidel, Tables of two-graphs, T.H.-Report 79-WSK-05, Technological University Eindhoven, Dept. Mathematics, 1979; also pp. 71-112 of "Combinatorics and Graph Theory (Calcutta, 1980)", Lect. Notes Math. 885, 1981.
F. C. Bussemaker, R. A. Mathon and J. J. Seidel, Tables of two-graphs, T.H.-Report 79-WSK-05, Technological University Eindhoven, Dept. Mathematics, 1979; also pp. 71-112 of "Combinatorics and Graph Theory (Calcutta, 1980)", Lect. Notes Math. 885, 1981.
CROSSREFS
Cf. A002854.
Sequence in context: A094605 A217662 A085619 * A325867 A333045 A050047
Adjacent sequences: A085617 A085618 A085619 * A085621 A085622 A085623
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jul 11 2003
STATUS
approved

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Last modified November 23 19:44 EST 2024. Contains 378050 sequences.
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