OFFSET
0,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..1000
FORMULA
G.f.: (x^4-4*x^3+6*x^2-3*x+1) / (1-x)^7.
MAPLE
a := n-> 1+ (1200+ (634+ (225+ (85+ (15+ n) *n) *n) *n) *n) *n/720: seq (a(n), n=0..40);
CROSSREFS
KEYWORD
nonn,easy,changed
AUTHOR
Alois P. Heinz, Oct 03 2008
STATUS
approved