A123406 Number of AT-free Berge perfect graphs on n nodes.

1, 2, 4, 11, 33, 144, 826, 6836, 76322, 1126575, 21410245, 521199672

Offset

1,2

Links

Table of n, a(n) for n=1..12.

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: A005470 A123471 A123416 * A123453 A351157 A123459

Adjacent sequences: A123403 A123404 A123405 * A123407 A123408 A123409

Keyword

nonn,more,changed

Author

N. J. A. Sloane, Oct 18 2006

Extensions

a(11) and a(12) added using tinygraph by Falk Hüffner, Jun 30 2018

Status

approved