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: A277204 A123437 A123435 * A123472 A277203 A123905
Adjacent sequences: A123406 A123407 A123408 * A123410 A123411 A123412
nonn,more
N. J. A. Sloane, Oct 18 2006
approved