A123459 Number of strict opposition perfect graphs on n nodes.

1, 2, 4, 11, 33, 145, 840, 6757, 66677, 742244

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: A123406 A123453 A351157 * A123426 A277204 A123437

Adjacent sequences: A123456 A123457 A123458 * A123460 A123461 A123462

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 18 2006

Status

approved