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 A132414 Integers n such that n^3 - (n + 2)^2 + n + 4 is a square. 3
 -1, 0, 3, 4, 75 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS n^3 - (n + 2)^2 + n + 4 = n^3 - n^2 - 3*n. The set of x values of integral solutions to the elliptic curve y^2 = n^3 - n^2 - 3*n (see Magma program) is {-1, 0, 3, 4, 75}. - Klaus Brockhaus, Nov 13 2007 LINKS EXAMPLE 0^3 - 2^2 + 4 = 0^2, 3^3 - 5^2 + 7 = 3^2, 4^3 - 6^2 + 8 = 6^2 and 75^3 - 77^2 + 79 = 645^2. PROG (MAGMA) P := PolynomialRing(Integers()); {x: x in Sort([ p[1] : p in IntegralPoints(EllipticCurve(n^3 - n^2 - 3*n)) ])}; /* Klaus Brockhaus, Nov 13 2007 */ CROSSREFS Cf. A005563, A028560. Sequence in context: A012087 A012194 A318208 * A041171 A279935 A111799 Adjacent sequences:  A132411 A132412 A132413 * A132415 A132416 A132417 KEYWORD sign,fini,full AUTHOR Mohamed Bouhamida (bhmd95(AT)yahoo.fr), Nov 12 2007 STATUS approved

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Last modified December 13 08:08 EST 2018. Contains 318082 sequences. (Running on oeis4.)