A123430 Number of (K_5,P_5)-free Berge perfect graphs on n nodes.

1, 2, 4, 11, 31, 124, 565, 3162, 19531, 132566, 961115, 7402630, 60209764

Offset

1,2

Links

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

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: A123443 A123427 A123421 * A390919 A394539 A086690

Adjacent sequences: A123427 A123428 A123429 * A123431 A123432 A123433

Keyword

nonn

Author

N. J. A. Sloane, Oct 18 2006

Extensions

a(11)-a(13) added using tinygraph by Falk Hüffner, Jun 30 2018

Status

approved