OFFSET
1,2
LINKS
S. Hougardy, Home Page
S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.
FORMULA
Euler transform of A079457. - Falk Hüffner, Jan 15 2016
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Oct 18 2006
EXTENSIONS
a(10) and a(11) added using formula by Falk Hüffner, Jan 15 2016
STATUS
approved