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A258697
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Number of torsion-free congruence subgroups of PSL(2,Z) of genus n, up to conjugacy in PSL(2,Z).
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0
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33, 48, 49, 108, 87, 133, 55, 213, 83, 208, 133, 195, 93, 343, 72, 289, 143, 351, 71, 411, 122, 504, 152, 312, 78
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OFFSET
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0,1
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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