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A062002 Gamma_0(n) has genus 0 and does not contain any elliptic elements. 0
4, 6, 8, 9, 12, 16, 18 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

J. McKay and A. Sebbar, Fuchsian groups, automorphic functions and Schwarzians, Math. Ann., 318 (2000), 255-275.

LINKS

Table of n, a(n) for n=1..7.

CROSSREFS

Sequence in context: A122786 A092630 A079142 * A090419 A209799 A028958

Adjacent sequences:  A061999 A062000 A062001 * A062003 A062004 A062005

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane, Jun 27 2001

STATUS

approved

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Last modified April 18 05:28 EDT 2014. Contains 240688 sequences.