The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #11 May 02 2023 13:01:37
%S -1,1,5,10,15,20,25,30,35,40,45,48,55,60,65,68,75,78,85,88,95,98,105,
%T 106,115,118,125,126,135,136,145,146,155,156,165,164,175,176,185,184,
%U 195,194,205,204,215,214,225,222,235,234,245,242,255,252
%N Dimension of the space of weight n cuspidal newforms for Gamma_1( 11 ).
%H William A. Stein, <a href="http://wstein.org/Tables/dimskg1new.gp">Dimensions of the spaces S_k^{new}(Gamma_1(N))</a>
%H William A. Stein, <a href="http://wstein.org/Tables/">The modular forms database</a>
%F From _Colin Barker_, Feb 24 2016: (Start)
%F a(n) = a(n-4) + a(n-6) - a(n-10) for n>13.
%F G.f.: -x^2*(1 -x -5*x^2 -10*x^3 -16*x^4 -19*x^5 -21*x^6 -19*x^7 -15*x^8 -10*x^9 -4*x^10 +x^11) / ((1 -x)^2*(1 +x)^2*(1 -x +x^2)*(1 +x^2)*(1 +x +x^2)).
%F (End)
%Y Cf. A017329 (bisection),
%K sign
%O 2,3
%A _N. J. A. Sloane_, Jul 14 2001