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Search: id:A102474
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| A102474 |
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a(n)=Number of conjugacy classes of congruence subgroups of genus n of PSL(2,Z). |
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+0
1
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| 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; listen)
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OFFSET
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0,1
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LINKS
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C. 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.
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CROSSREFS
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Sequence in context: A108601 A039603 A030026 this_sequence A015235 A063365 A116869
Adjacent sequences: A102471 A102472 A102473 this_sequence A102475 A102476 A102477
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KEYWORD
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more,nonn
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AUTHOR
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Kok Seng Chua (chuaks(AT)ihpc.a-star.edu.sg), Feb 23 2005
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