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A258699
Maximal level of a torsion-free congruence subgroup of PSL(2,Z) of genus n.
0
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.
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
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jun 07 2015
STATUS
approved