A258699 Maximal level of a torsion-free congruence subgroup of PSL(2,Z) of genus n.

32, 36, 64, 72, 81, 75, 121, 128, 96, 128, 118, 147, 142, 162, 167, 179, 243, 242, 214, 256, 239, 256, 263, 274, 284

Offset

0,1

References

C. J. Cummins and S. Pauli, Congruence Subgroups of PSL(2,Z) of Genus Less than or Equal to 24, Experiment. Math. Volume 12, Issue 2 (2003), 243-255. See Table 1.

Links

Table of n, a(n) for n=0..24.

Crossrefs

A258691, A102474, A258693-A258700 give the ten sequences in Table 1 of Cummins and Pauli (2003).

Sequence in context: A095457 A335103 A045226 * A188827 A030094 A082591

Adjacent sequences: A258696 A258697 A258698 * A258700 A258701 A258702

Keyword

nonn,more

Author

N. J. A. Sloane, Jun 07 2015

Status

approved