OFFSET
0,1
LINKS
Harry J. Smith, Table of n, a(n) for n = 0..500
FORMULA
a(n) = (2*n^2 + 18*n + 35)*binomial(n+6, 6)/7.
G.f.: (5 + 10*x + x^2)/(1-x)^9.
PROG
(PARI) a(n)={(2*n^2 + 18*n + 35)*binomial(n + 6, 6)/7} \\ Harry J. Smith, Jul 07 2009
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Apr 06 2001
STATUS
approved