OFFSET
4,1
LINKS
R. H. Hardin, Table of n, a(n) for n=4..25
FORMULA
Empirical G.f.: -80*x^3 - 2*x^3*(40 - 406*x + 3813*x^2 + 218085*x^3 + 3185176*x^4 + 9874768*x^5 + 7680205*x^6 + 626909*x^7 - 183350*x^8 + 4896*x^9 + 288*x^10)/(-1+x)^11. - Vaclav Kotesovec, Nov 30 2012
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 11 2009
STATUS
approved