OFFSET
1,1
COMMENTS
FORMULA
Empirical g.f.: -x*(x^5+x^4+5*x^3-1189*x^2-109*x-5)/(x^6-1298*x^3+1). - Colin Barker, Jun 04 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Sep 21 2011
STATUS
approved