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A260994 Numbers n such that the modular curve X_0(n) has genus >= 2 and contains infinitely many points of degree 2 over some number field L. 3
22, 23, 26, 28, 30, 31, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 53, 54, 55, 56, 59, 60, 61, 62, 63, 64, 65, 69, 71, 72, 75, 79, 81, 83, 89, 92, 94, 95, 101, 119, 131 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Francesc Bars, Bielliptic Modular Curves, Journal of Number Theory, 76 (1999), 154-165.
CROSSREFS
Sequence in context: A260993 A276182 A091404 * A114963 A146755 A106556
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 December 9 13:48 EST 2023. Contains 367691 sequences. (Running on oeis4.)