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A055542 Total number of nodes in all simple graphs of n nodes. 1
1, 4, 12, 44, 170, 936, 7308, 98768, 2472012, 120051680, 11208976504, 1981094071104, 656526407783376, 406758179201296832, 471397289547064631520, 1024016251272440926318848 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

Eric Weisstein's World of Mathematics, Source

CROSSREFS

Equals A000088(n)*n.

Cf. A000169, A055543, A055544.

Sequence in context: A188632 A151460 A149364 * A149365 A000759 A076793

Adjacent sequences:  A055539 A055540 A055541 * A055543 A055544 A055545

KEYWORD

nonn

AUTHOR

Eric Weisstein (eric(AT)weisstein.com)

EXTENSIONS

More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 25 2002

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.