A123445 Number of paw-free Berge perfect graphs on n nodes.

1, 2, 4, 10, 21, 54, 130, 395, 1323, 5946, 33468, 254443, 2539461, 34040879

Offset

1,2

Links

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

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 6c1dbe4.

Crossrefs

Sequence in context: A165137 A065023 A301700 * A104431 A130666 A179116

Adjacent sequences: A123442 A123443 A123444 * A123446 A123447 A123448

Keyword

nonn

Author

N. J. A. Sloane, Oct 18 2006

Extensions

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

Status

approved