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A102474 Number of congruence subgroups of PSL(2,Z) of genus n, up to conjugacy in PSL(2,Z). 10
132, 187, 177, 284, 261, 303, 230, 480, 277, 469, 304, 489, 269, 664, 268, 596, 410, 819, 273, 812, 308, 888, 365, 686, 336 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
C. J. Cummins and S. Pauli, Congruence Subgroups of PSL(2,Z)
C. J. Cummins and S. Pauli, Congruence Subgroups of PSL(2,Z) of genus less than or equal to 24, Experimental Math., 12 (2), 2003, 243-255. [Note two different references with similar titles]
CROSSREFS
A258691, A102474, A258693-A258700 give the ten sequences in Table 1 of Cummins and Pauli (2003).
Sequence in context: A039603 A354812 A030026 * A015235 A204649 A224548
KEYWORD
nonn,more
AUTHOR
Kok Seng Chua (chuaks(AT)ihpc.a-star.edu.sg), Feb 23 2005
STATUS
approved

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Last modified March 5 08:40 EST 2024. Contains 370538 sequences. (Running on oeis4.)