The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A341562 Fourier coefficients of the modular form (1/t_{3A}) * sqrt(1 - 108/t_{3A}) * F_{3A}^18. 1
 0, 1, 12, -801, -27248, -389730, -3120012, -14532448, -35492160, -19420479, 117458280, 405309252, 1029595248, 887517566, -3584009856, -3351877470, -1982054144, -34455379518, 33499242252, 58483431740, -28952389920, 113929105248, 227377787184, -603011632584, 182257162560 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..24. Masao Koike, Modular forms on non-compact arithmetic triangle groups, Unpublished manuscript [Extensively annotated with OEIS A-numbers by N. J. A. Sloane, Feb 14 2021.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, A341555, A341560. Sequence in context: A282437 A285150 A221289 * A155813 A220119 A178023 Adjacent sequences: A341559 A341560 A341561 * A341563 A341564 A341565 KEYWORD sign AUTHOR Robert C. Lyons, Feb 14 2021 EXTENSIONS More terms from Georg Fischer, Mar 31 2023 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 2 20:53 EST 2023. Contains 367526 sequences. (Running on oeis4.)