A387891 Conductor of elliptic curve y^2 = x^3 - n*x - n.

368, 1216, 2160, 176, 2800, 1728, 784, 320, 1296, 20800, 32912, 1512, 13520, 90944, 118800, 592, 189584, 25920, 40432, 21200, 402192, 472384, 550160, 39744, 29200, 832832, 1296, 33320, 1197584, 1339200, 1491472, 6464, 1829520, 2016064, 2214800, 16848, 240944, 115520, 3139344

Offset

1,1

Links

Shreyansh Jaiswal, Table of n, a(n) for n = 1..10000

LMFDB, y^2 = x^3 - x - 1.

Wikipedia, Conductor of an elliptic curve.

Example

a(1) = 368 because y^2 = x^3 - x - 1 has conductor 368.

Prog

(SageMath)
def a(k):
    E = EllipticCurve([-k, -k])
    return E.conductor()
[a(k) for k in range(1, 31)]
(PARI) a(n) = ellglobalred(ellinit([-n, -n]))[1]; \\ Michel Marcus, Sep 12 2025

Crossrefs

Cf. A385881, A387834.

Sequence in context: A307010 A098823 A252222 * A173055 A318938 A393476

Adjacent sequences: A387888 A387889 A387890 * A387892 A387893 A387894

Keyword

nonn

Author

Shreyansh Jaiswal, Sep 11 2025

Status

approved