A062002 Gamma_0(n) has genus 0 and does not contain any elliptic elements.

4, 6, 8, 9, 12, 16, 18

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