%I
%S 0,1,21,567,2463
%N Fourier coefficients of the modular form (1/t_{6a}^3) * (16*sqrt(3)/t_{6a}) * (112*sqrt(3)/t_{6a})^(2/3) * F_{6a}^16.
%H Masao Koike, <a href="/A004016/a004016.pdf">Modular forms on noncompact arithmetic triangle groups</a>, Unpublished manuscript [Extensively annotated with OEIS Anumbers by N. J. A. Sloane, Feb 14 2021. Sloane wrote 2005 on the first page but the internal evidence suggests 1997.] See page 31.
%K sign,more
%O 0,3
%A _Robert C. Lyons_, Feb 15 2021
