A356712 Numbers k such that Mordell's equation y^2 = x^3 + k^3 has exactly 7 integral solutions.

2, 18, 50, 56, 57, 98, 112, 114, 148, 162, 224, 228, 273, 280, 330, 336, 338, 364, 448, 504, 513, 578

Offset

1,1

Comments

Cube root of A179151.

Links

Table of n, a(n) for n=1..22.

Example

2 is a term since the equation y^2 = x^3 + 2^3 has 3 solutions (-2,0), (1,+-3), (2,+-4), and (46,+-312).

Crossrefs

Cf. A081119, A179145, A179147, A179149, A179151, A356709, A356710, A356711.

Indices of 7 in A356706, of 3 in A356707, and of 4 in A356708.

Sequence in context: A208652 A223469 A048910 * A077591 A050808 A058653

Adjacent sequences: A356709 A356710 A356711 * A356713 A356714 A356715

Keyword

nonn,hard,more

Author

Jianing Song, Aug 23 2022

Status

approved