OFFSET
1,3
LINKS
Eric Weisstein's World of Mathematics, n-Chromatic Graph
FORMULA
a(n) = A047864(n)-1. - Vladeta Jovovic, Jul 31 2003
CROSSREFS
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, May 24 2003
EXTENSIONS
More terms from Vladeta Jovovic, Jul 31 2003
One further term from David Wasserman, Dec 13 2004
STATUS
approved