A123418 Number of dart-free Berge perfect graphs on n nodes.

1, 2, 4, 11, 32, 124, 512, 2495, 13245, 79734, 538052, 4171519, 37767142

Offset

1,2

Links

Table of n, a(n) for n=1..13.

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 3e9b2ba.

Crossrefs

Sequence in context: A056325 A345207 A103293 * A123412 A074408 A123425

Adjacent sequences: A123415 A123416 A123417 * A123419 A123420 A123421

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 18 2006

Extensions

a(11)-a(13) added using tinygraph by Falk Hüffner, Jun 29 2018

Status

approved