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A341554
Fourier coefficients of the modular form sqrt(1 - 108/t_{3A}) * F_{3A}^10.
3
1, 6, -810, -22134, -278634, -2122524, -11039814, -43693008, -145572714, -424326378, -1083745980, -2551211640, -5663429382, -11474793708, -22397094864, -42109347204, -74498070378, -128307428244, -217704941082, -349133308872, -555058873404, -870035772336, -1308777310008
OFFSET
0,2
LINKS
Masao Koike, Modular forms on non-compact arithmetic triangle groups, Unpublished manuscript [Extensively annotated with OEIS A-numbers by N. J. A. Sloane, Feb 14 2021.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
KEYWORD
sign
AUTHOR
Robert C. Lyons, Feb 14 2021
EXTENSIONS
More terms from Georg Fischer, Mar 31 2023
STATUS
approved