1,2
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.
Sequence in context: A123433 A123452 A123436 * A123419 A123451 A123470
Adjacent sequences: A123414 A123415 A123416 * A123418 A123419 A123420
nonn,more
N. J. A. Sloane, Oct 18 2006
approved