OFFSET
1,1
LINKS
William A. Stein, Dimensions of the spaces S_k^{new}(Gamma_0(N))
William A. Stein, The modular forms database
Index entries for linear recurrences with constant coefficients, signature (0,1,1,0,-1).
FORMULA
a(n) = a(n-2)+a(n-3)-a(n-5) for n>6. G.f.: -x*(x^5 -4*x^4 -5*x^3 -5*x^2 -4*x- 3)/((x -1)^2*(x +1)*(x^2 +x +1)). [Colin Barker, Sep 27 2012]
MATHEMATICA
LinearRecurrence[{0, 1, 1, 0, -1}, {3, 4, 8, 12, 16, 16}, 50] (* Harvey P. Dale, Dec 16 2017 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jul 10 2001
STATUS
approved