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A052438 Number of simple unlabeled n-node graphs with 2 center nodes. 0
0, 2, 0, 2, 4, 19, 84 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

CROSSREFS

A052437, ..., A052441.

Sequence in context: A058210 A079550 A067648 * A158855 A005074 A161564

Adjacent sequences:  A052435 A052436 A052437 * A052439 A052440 A052441

KEYWORD

nonn,more

AUTHOR

Eric Weisstein (eric(AT)weisstein.com)

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Last modified February 18 00:14 EST 2012. Contains 206085 sequences.