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A123443 Number of parity perfect graphs on n nodes. 1
1, 2, 4, 11, 31, 116, 466, 2207, 11258, 63098, 379448, 2496922, 18441849, 163588975 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..14.

S. Hougardy, Home Page

S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.

F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 8c665c7.

Jessica Shi, Enumeration of unlabeled graph classes: A study of tree decompositions and related approaches, 2015.

FORMULA

Euler transform of A280763.

CROSSREFS

Sequence in context: A154603 A063254 A280766 * A123427 A123421 A123430

Adjacent sequences:  A123440 A123441 A123442 * A123444 A123445 A123446

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Oct 18 2006

EXTENSIONS

a(11)-a(14) added using tinygraph by Falk Hüffner, Jun 28 2018

STATUS

approved

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Last modified October 16 21:10 EDT 2019. Contains 328103 sequences. (Running on oeis4.)