login
A099101
Quintisection of 1/(1-x^3-x^4).
0
1, 0, 3, 5, 16, 43, 113, 316, 839, 2301, 6204, 16855, 45665, 123800, 335659, 909845, 2466760, 6686979, 18128529, 49145300, 133231279, 361184653, 979156724, 2654456239, 7196122817, 19508406192, 52886508243, 143373224101
OFFSET
0,3
FORMULA
a(n)=sum{k=0..floor(5n/3), binomial(k, 5n-3k)}.
a(n)=A017817(5n).
G.f.: (1+x)*(x^2+x-1) / ( -1+5*x^2+6*x^3+x^4 ). - R. J. Mathar, Feb 19 2015
CROSSREFS
Cf. A099099.
Sequence in context: A368409 A371868 A243321 * A208819 A038120 A192911
KEYWORD
easy,nonn,less
AUTHOR
Paul Barry, Sep 29 2004
STATUS
approved