cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A134223 Values n for which integer solutions of Mordell curve y^2=x^3+n have 4 different values of x (or equivalently of nonnegative y).

Original entry on oeis.org

8, 24, 36, 65, 80, 89, 108, 145, 161, 233, 260, 353, 377, 441, 449, 505, 521, 528, 537, 649, 681, 737, 745, 784, 792, 1100, 1116, 1224, 1296, 1412, 1513, 1536, 1548, 1585, 1753, 1897, 1961, 2025, 2033, 2185, 2250, 2305, 2404, 2521, 2537, 2745, 2793, 2852
Offset: 1

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Author

Artur Jasinski, Oct 14 2007

Keywords

Comments

Union of A179151 and A179152.

Crossrefs

Formula

Numbers n such that A134108(n) = Floor((A081119(n)+1)/2) = 4.

Extensions

Edited and extended by Ray Chandler, Jul 12 2010