A123412 Number of chair-free Berge perfect graphs on n nodes.

1, 2, 4, 11, 32, 126, 546, 2766, 15014, 88460, 563440, 3988355, 32324527, 314549464

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: A345207 A103293 A123418 * A074408 A123425 A123414

Adjacent sequences: A123409 A123410 A123411 * A123413 A123414 A123415

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 18 2006

Extensions

a(11)-a(14) added using tinygraph by Falk Hüffner, Jun 29 2018

Status

approved