OFFSET
0,3
COMMENTS
Cycle index of symmetry group is (s(1)^9 + s(1)*s(2)^4 + 2*s(1)*s(4)^2 + 4*s(1)^3*s(2)^3)/8.
LINKS
Index entries for linear recurrences with constant coefficients, signature (10,-45,120,-210,252,-210,120,-45,10,-1).
FORMULA
a(n) = (n^9 + n^5 + 2*n^3 + 4*n^6)/8.
G.f.: x*(38*x^7+1753*x^6+11244*x^5+19535*x^4+10810*x^3+1887*x^2+92*x+1)/(x-1)^10. - Colin Barker, Oct 04 2012
MATHEMATICA
Table[(n^9+n^5+2*n^3+4*n^6)/8, {n, 0, 20}]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Geoffrey Critzer, Sep 30 2012
STATUS
approved