A341559 Fourier coefficients of the modular form sqrt(1 - 108/t_{3A}) * F_{3A}^14.

1, 30, -450, -39390, -977730, -14296428, -143213310, -1055712720, -6025115970, -27903841170, -109691724204, -379012525560, -1175178073470, -3321971658300, -8707342384080, -21376296671508, -49403752829250, -108646063965540, -228747032737650, -461282293976520, -898676446989996

Offset

0,2

Links

Table of n, a(n) for n=0..20.

Masao Koike, Modular forms on non-compact arithmetic triangle groups, Unpublished manuscript [Extensively annotated with OEIS A-numbers by N. J. A. Sloane, Feb 14 2021.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.

Formula

1/t_{3A} is A030197, F_{3A} is A004016. - Georg Fischer, Mar 31 2023

Crossrefs

Cf. A004016, A030197, A341554, A341560.

Sequence in context: A307917 A006421 A035710 * A042746 A281700 A024524

Adjacent sequences: A341556 A341557 A341558 * A341560 A341561 A341562

Keyword

sign

Author

Robert C. Lyons, Feb 14 2021

Extensions

More terms from Georg Fischer, Mar 31 2023

Status

approved