A123442 Number of P_4-stable Berge perfect graphs on n nodes.

1, 2, 4, 11, 33, 147, 894, 8515, 120263, 2363930

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: A123472 A277203 A123905 * A123405 A123457 A123455

Adjacent sequences: A123439 A123440 A123441 * A123443 A123444 A123445

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 18 2006

Status

approved