A123443 Number of parity perfect graphs on n nodes.

1, 2, 4, 11, 31, 116, 466, 2207, 11258, 63098, 379448, 2496922, 18441849, 163588975

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