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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. 2
1, 105, 227, 1221, 3930, 2957 (list; graph; refs; listen; history; text; internal format)
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

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Last modified August 24 03:51 EDT 2019. Contains 326260 sequences. (Running on oeis4.)