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: A123472 A277203 A123905 * A123405 A123457 A123455
Adjacent sequences: A123439 A123440 A123441 * A123443 A123444 A123445
nonn,more
N. J. A. Sloane, Oct 18 2006
approved