A362455 Squarefree positive integers d such that the dimension of the space of cuspidal harmonic automorphic forms for SL(2, O_{-d}) is zero, where O_{-d} is the ring of integers in Q(sqrt(-d)).

1, 2, 3, 5, 6, 7, 11, 15, 19, 23, 31, 39, 47, 71

Offset: 1

Author

Gary W. Adamson and N. J. A. Sloane, May 06 2023, following a suggestion from Roger L. Bagula

Keywords

• nonn
• fini
• full

Comments

Reid, Alan W., and Colin MacLachlan. "The Arithmetic of hyperbolic 3-manifolds." Graduate Texts in Mathematics 219, Springer (2003).

Links

• Alan W. Reid, Arithmetic hyperbolic manifolds, slides of a talk, Cornell University, June 2014.
• Karen Vogtmann, Rational homology of Bianchi groups, Mathematische Annalen 272.3 (1985): 399-419.