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A052439 Number of simple unlabeled n-node graphs with 3 center nodes. 5
0, 0, 3, 0, 4, 18, 119, 1055, 17297, 486446 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..10.

Eric Weisstein's World of Mathematics, Graph Center

CROSSREFS

Column 3 of A294525 for n > 3.

Cf. A052437, A052438, A052440, A052441.

Sequence in context: A074171 A180657 A094665 * A261239 A261214 A143073

Adjacent sequences:  A052436 A052437 A052438 * A052440 A052441 A052442

KEYWORD

nonn,more

AUTHOR

Eric W. Weisstein

EXTENSIONS

a(8)-a(10) from Andrew Howroyd, Nov 02 2017

STATUS

approved

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Last modified February 17 16:09 EST 2018. Contains 299296 sequences. (Running on oeis4.)