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 A309145 Numbers k for which rank of the elliptic curve y^2=x^3+(k^2+6*k-3)*x^2-16*k*x is 2. 0
 28, 52, 59, 70, 76, 101, 103, 108, 115, 122, 130, 139, 148, 164, 172, 180, 181, 190, 199, 208, 210, 220, 222, 223, 228, 268, 270, 284, 314, 316, 327, 328, 339, 340, 364, 376, 388, 398, 403, 420, 427, 430, 436, 443, 446, 448, 456, 457, 460, 480, 487, 490, 504, 521, 532, 540 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Allan J. MacLeod, Knight's Problem FORMULA A309144(a(n)) = 2. PROG (PARI) for(k=1, 1e3, if(ellanalyticrank(ellinit([0, k^2+6*k-3, 0, -16*k, 0]))[1]==2, print1(k", "))) CROSSREFS Cf. A309144. Sequence in context: A046419 A063770 A161923 * A039772 A291855 A181792 Adjacent sequences: A309142 A309143 A309144 * A309146 A309147 A309148 KEYWORD nonn AUTHOR Seiichi Manyama, Jul 14 2019 STATUS approved

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Last modified December 2 08:36 EST 2022. Contains 358493 sequences. (Running on oeis4.)