OFFSET
1,2
FORMULA
Conjectured g.f.: x*(-1-2*x-x^2+3*x^3) / ( (x^2+1)*(x^2-x-1)*(x^2+x-1)^2 ). - R. J. Mathar, Apr 27 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved