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1,2
Table of n, a(n) for n=1..50.
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).
a(n) = a(n-2)+a(n-3)-a(n-5) for n>6. G.f.: x*(x^5 +5*x^3 +7*x^2 +6*x +1)/((1 -x)^2*(1 +x)*(1 +x +x^2)). [Colin Barker, Sep 27 2012]
Sequence in context: A109138 A315858 A123303 * A096175 A274349 A315859
Adjacent sequences: A063204 A063205 A063206 * A063208 A063209 A063210
nonn
N. J. A. Sloane, Jul 10 2001
approved