A123410 Number of bull-free Berge perfect graphs on n nodes.

1, 2, 4, 11, 32, 130, 592, 3275, 19546, 126842, 865872, 6301047, 49781998, 450653524

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 3e9b2ba.

Crossrefs

Sequence in context: A074408 A123425 A123414 * A123434 A123424 A123449

Adjacent sequences: A123407 A123408 A123409 * A123411 A123412 A123413

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 18 2006

Extensions

a(11)-a(14) added using tinygraph by Falk Hüffner, Jun 30 2018

Status

approved