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 A134221 Values n for which integer solutions of Mordell curve y^2=x^3+n have 2 different values of x (or equivalently of nonnegative y). 3
 12, 15, 28, 44, 63, 68, 101, 121, 128, 148, 168, 197, 198, 204, 208, 220, 232, 248, 269, 294, 337, 343, 346, 350, 369, 404, 409, 443, 481, 485, 492, 540, 556, 561, 575, 618, 640, 656, 659, 701, 702, 716, 740, 757, 768, 775, 785, 804, 829, 850, 857, 868, 885 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Union of A179147 and A179148. LINKS FORMULA Numbers n such that A134108(n) = Floor((A081119(n)+1)/2) = 2. CROSSREFS Cf. A134108, A134220, A134222, A134223. Sequence in context: A290508 A063604 A124521 * A179148 A194234 A296796 Adjacent sequences:  A134218 A134219 A134220 * A134222 A134223 A134224 KEYWORD nonn AUTHOR Artur Jasinski, Oct 14 2007 EXTENSIONS Edited and extended by Ray Chandler, Jul 12 2010 STATUS approved

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Last modified May 12 10:54 EDT 2021. Contains 343821 sequences. (Running on oeis4.)