A123417 Number of Delta<=6 Berge perfect graphs on n nodes.

1, 2, 4, 11, 33, 148, 906, 7981, 84637, 922648

Offset

1,2

Links

Table of n, a(n) for n=1..10.

S. Hougardy, Home Page

S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.

Crossrefs

Sequence in context: A123433 A123452 A123436 * A123419 A123451 A123470

Adjacent sequences: A123414 A123415 A123416 * A123418 A123419 A123420

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 18 2006

Status

approved