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A260993
Numbers n such that the modular curve X_0(n) contains infinitely many rational points of degree 2.
3
22, 23, 26, 28, 29, 30, 31, 33, 35, 37, 39, 40, 41, 43, 46, 47, 48, 50, 53, 59, 61, 65, 71, 79, 83, 89, 101, 131
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..28.
Francesc Bars, Bielliptic Modular Curves, Journal of Number Theory, 76 (1999), 154-165.
CROSSREFS
Cf. A260990, A260991, A260992, A260994.
Sequence in context: A092619 A092624 A254751 * A276182 A091404 A260994
Adjacent sequences: A260990 A260991 A260992 * A260994 A260995 A260996
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Aug 08 2015, following a suggestion from Roger L. Bagula, Jul 22 2015
STATUS
approved

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Last modified October 11 20:50 EDT 2024. Contains 376662 sequences.
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