A023646 - OEIS

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A023646

Number of vertex-transitive graphs of valency 3 with 2n nodes.

2

1, 2, 3, 3, 7, 3, 7, 7, 11, 3, 20, 5, 10, 15

(list; graph; refs; listen; history; text; internal format)

OFFSET

2,2

REFERENCES

CRC Handbook of Combinatorial Designs, 1996, p. 649.

LINKS

Table of n, a(n) for n=2..15.

CROSSREFS

Even-indexed terms of column k=3 of A319367.

Sequence in context: A234943 A209494 A082910 * A056225 A343390 A105437

Adjacent sequences: A023643 A023644 A023645 * A023647 A023648 A023649

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane

EXTENSIONS

a(14)-a(15) added by Andrew Howroyd, Sep 18 2018

STATUS

approved