OFFSET
1,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,1,-1).
FORMULA
G.f.: x*(1 + x + x^2 + x^3 + 2*x^4 + x^5) / ( (x^4 + x^3 + x^2 + x + 1)*(x-1)^2 ). - R. J. Mathar, Oct 25 2011
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved