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A102474 Number of congruence subgroups of PSL(2,Z) of genus n, up to conjugacy in PSL(2,Z). 10

%I

%S 132,187,177,284,261,303,230,480,277,469,304,489,269,664,268,596,410,

%T 819,273,812,308,888,365,686,336

%N Number of congruence subgroups of PSL(2,Z) of genus n, up to conjugacy in PSL(2,Z).

%H C. Cummins and S. Pauli, <a href="http://www.math.tu-berlin.de/~pauli/congruence/csg-stat.html">Congruence Subgroups of PSL(2,Z) </a> [broken link?]

%H C. J. Cummins and S. Pauli, <a href="http://www.emis.de/journals/EM/expmath/volumes/12/12.2/pp243_255.pdf">Congruence Subgroups of PSL(2,Z) of genus less than or equal to 24 </a>, Experimental Math., 12 (2), 2003, 243-255.

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

%K more,nonn

%O 0,1

%A Kok Seng Chua (chuaks(AT)ihpc.a-star.edu.sg), Feb 23 2005

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Last modified April 24 16:16 EDT 2019. Contains 322430 sequences. (Running on oeis4.)