OFFSET
0,3
FORMULA
G.f.: (3*x^3+sqrt(-3*x^2-2*x+1)*(x^2+4*x-3)-3*x^2-7*x+3)/(sqrt(-3*x^2-2*x+1)*(2*x^3-x^2-2*x+1)-3*x^3+x^2+3*x-1).
D-finite with recurrence: +n*a(n) +(-3*n+2)*a(n-1) +2*(-n+1)*a(n-2) +2*(3*n-7)*a(n-3) +(n-2)*a(n-4) +3*(-n+4)*a(n-5)=0. - R. J. Mathar, Mar 12 2017
PROG
(Maxima)
(3*x^3+sqrt(-3*x^2-2*x+1)*(x^2+4*x-3)-3*x^2-7*x+3)/(sqrt(-3*x^2-2*x+1)*(2*x^3-x^2-2*x+1)-3*x^3+x^2+3*x-1);
taylor(%, x, 0, 27);
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Kruchinin, Dec 06 2016
STATUS
approved