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%I #11 Sep 08 2022 08:46:21
%S 17,56,65,77,90,97,117,132,136,141,145,155,156,161,184,205,207,219,
%T 220,221,241,252,257,259,260,264,272,275,285,291,292,301,305,306,337,
%U 342,355,356,371,376,395,396,401,420,429,433,445,449,452,456,465,481,497,507,516
%N Numbers k for which rank of the elliptic curve y^2=x^3-k*x is 2.
%o (PARI) for(k=1, 1e3, if(ellanalyticrank(ellinit([0, 0, 0, -k, 0]))[1]==2, print1(k", ")))
%o (Magma) for k in[1..1000] do if Rank(EllipticCurve([0,0,0,-k,0])) eq 2 then print k; end if; end for; // _Vaclav Kotesovec_, Jul 08 2019
%Y Cf. A002156 (rank 0), A002157 (rank 1). this sequence (rank 2), A309033 (rank 3), A309034(rank 4).
%Y Cf. A076329.
%K nonn
%O 1,1
%A _Seiichi Manyama_, Jul 08 2019
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