0,2

Table of n, a(n) for n=0..31.

Masao Koike, Modular forms on non-compact arithmetic triangle groups, Unpublished manuscript [Extensively annotated with OEIS A-numbers by N. J. A. Sloane, Feb 14 2021. I wrote 2005 on the first page but the internal evidence suggests 1997.]

Sequence in context: A221398 A280803 A124101 * A003696 A199709 A205227

Adjacent sequences: A198945 A198946 A198947 * A198949 A198950 A198951

sign

N. J. A. Sloane, Oct 31 2011

approved