A123471 Number of unimodular perfect graphs on n nodes.

1, 2, 4, 11, 33, 144, 822, 6744, 73147, 1006995

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: A123448 A039707 A005470 * A123416 A123406 A123453

Adjacent sequences: A123468 A123469 A123470 * A123472 A123473 A123474

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 18 2006

Status

approved