A341555 - OEIS

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A341555

Fourier coefficients of the modular form (1/t_{3A}) * sqrt(1 - 108/t_{3A}) * F_{3A}^10.

0, 1, -36, -81, 784, -1314, 2916, -4480, -9792, 6561, 47304, 1476, -63504, -151522, 161280, 106434, -48896, 108162, -236196, 593084, -1030176, 362880, -53136, -969480, 793152, -226529, 5454792, -531441, -3512320, -6642522, -3831624, 7070600, 6773760, -119556, -3893832

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OFFSET

0,3

LINKS

Table of n, a(n) for n=0..34.

Masao Koike, Modular forms on non-compact arithmetic triangle groups, Unpublished manuscript [Extensively annotated with OEIS A-numbers by N. J. A. Sloane, Feb 14 2021.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 29.

FORMULA

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

CROSSREFS

Cf. A004016, A030197, A341305, A341554, A341560, A341562.

Sequence in context: A136359 A257649 A259240 * A084006 A254648 A202330

Adjacent sequences: A341552 A341553 A341554 * A341556 A341557 A341558

KEYWORD

sign

AUTHOR

Robert C. Lyons, Feb 14 2021

EXTENSIONS

More terms from Georg Fischer, Mar 31 2023

STATUS

approved