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%I #18 Apr 12 2019 07:28:14
%S 1,105,227,1221,3930,2957
%N 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.
%H J. Gebel, <a href="/A001014/a001014.txt">Integer points on Mordell curves</a> [Cached copy, after the original web site tnt.math.se.tmu.ac.jp was shut down in 2017]
%e Order 1 for k=1, order 4 for k=105, order 9 for k=227.
%Y Cf. A179130, A179138-A179142.
%K nonn,more
%O 1,2
%A _Artur Jasinski_, Jun 30 2010
%E in title k with n reversed, last term removed because was not successive one _Artur Jasinski_, Oct 10 2010