A179143 The smallest positive parameter k for which the Tate-Shafarevich group Ш of the elliptic curve y^2=x^3-k has order n^2.

1, 105, 227, 1221, 3930, 2957

Offset

1,2

Links

Table of n, a(n) for n=1..6.

J. Gebel, Integer points on Mordell curves [Cached copy, after the original web site tnt.math.se.tmu.ac.jp was shut down in 2017]

Example

Order 1 for k=1, order 4 for k=105, order 9 for k=227.

Crossrefs

Cf. A179130, A179138-A179142.

Sequence in context: A212665 A242063 A228307 * A176878 A088595 A308643

Adjacent sequences: A179140 A179141 A179142 * A179144 A179145 A179146

Keyword

nonn,more

Author

Artur Jasinski, Jun 30 2010

Extensions

in title k with n reversed, last term removed because was not successive one Artur Jasinski, Oct 10 2010

Status

approved