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A062002
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Gamma_0(n) has genus 0 and does not contain any elliptic elements.
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0
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OFFSET
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1,1
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REFERENCES
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J. McKay and A. Sebbar, Fuchsian groups, automorphic functions and Schwarzians, Math. Ann., 318 (2000), 255-275.
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LINKS
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Table of n, a(n) for n=1..7.
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CROSSREFS
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Sequence in context: A122786 A092630 A079142 * A090419 A209799 A028958
Adjacent sequences: A061999 A062000 A062001 * A062003 A062004 A062005
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KEYWORD
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nonn,fini,full
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AUTHOR
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N. J. A. Sloane, Jun 27 2001
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STATUS
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approved
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