OFFSET
4,2
LINKS
M. Klazar, Bell numbers, their relatives and algebraic differential equations, J. Combin. Theory, A 102 (2003), 63-87.
CROSSREFS
KEYWORD
nonn,easy,nice
AUTHOR
N. J. A. Sloane, Nov 12 2004
EXTENSIONS
More terms from Vladeta Jovovic, Jul 11 2007
STATUS
approved