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%I #10 Mar 31 2023 09:23:54
%S 1,30,-450,-39390,-977730,-14296428,-143213310,-1055712720,
%T -6025115970,-27903841170,-109691724204,-379012525560,-1175178073470,
%U -3321971658300,-8707342384080,-21376296671508,-49403752829250,-108646063965540,-228747032737650,-461282293976520,-898676446989996
%N Fourier coefficients of the modular form sqrt(1 - 108/t_{3A}) * F_{3A}^14.
%H Masao Koike, <a href="/A004016/a004016.pdf">Modular forms on non-compact arithmetic triangle groups</a>, Unpublished manuscript [Extensively annotated with OEIS A-numbers by N. J. A. Sloane, Feb 14 2021. Sloane wrote 2005 on the first page but the internal evidence suggests 1997.] See page 30.
%F 1/t_{3A} is A030197, F_{3A} is A004016. - _Georg Fischer_, Mar 31 2023
%Y Cf. A004016, A030197, A341554, A341560.
%K sign
%O 0,2
%A _Robert C. Lyons_, Feb 14 2021
%E More terms from _Georg Fischer_, Mar 31 2023
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