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: A123409 A123472 A277203 * A123442 A123405 A123457
Adjacent sequences: A123902 A123903 A123904 * A123906 A123907 A123908
nonn,more
N. J. A. Sloane, Oct 18 2006
approved