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%I #14 Dec 28 2024 11:35:19
%S 1,2,4,6,8,8,12,12,14,16,18,18,22,22,24,26,28,28,32,32,34,36,38,38,42,
%T 42,44,46,48,48,52,52,54,56,58,58,62,62,64,66,68,68,72,72,74,76,78,78,
%U 82,82
%N Dimension of the space of weight 2n cuspidal newforms for Gamma_0( 11 ).
%H R. J. Mathar, <a href="/A063199/b063199.txt">Table of n, a(n) for n = 1..1000</a>
%H G. Martin, <a href="http://dx.doi.org/10.1016/j.jnt.2004.10.009">Dimensions of the spaces of cusp forms and newforms on Gamma_0(N) and Gamma_1(N)</a>, J. Numb. Theory 112 (2005) 298-331, Theorem 1.
%H William A. Stein, <a href="http://wstein.org/Tables/dimskg0new.gp">Dimensions of the spaces S_k^{new}(Gamma_0(N))</a>
%H William A. Stein, <a href="http://wstein.org/Tables/">The modular forms database</a>
%H <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (0,1,1,0,-1).
%F G.f.: x -2*x^2*(-1-2*x-2*x^2-x^3+x^4) / ( (1+x)*(1+x+x^2)*(x-1)^2 ). - _R. J. Mathar_, Jul 15 2015
%t LinearRecurrence[{0,1,1,0,-1},{1,2,4,6,8,8},60] (* _Harvey P. Dale_, Dec 28 2024 *)
%K nonn
%O 1,2
%A _N. J. A. Sloane_, Jul 10 2001