A034040 Imprimitively but not primitively represented by (x^2+xy+2y^2, x>=0, y>=0).
9, 16, 18, 25, 36, 49, 50, 72, 81, 98, 99, 100, 121, 126, 144, 162, 169, 196, 198, 200, 207, 224, 225, 252, 275, 288, 289, 324, 333, 338, 350, 361, 387, 392, 396, 400, 414, 441, 450, 477, 504, 512, 522, 539, 550, 575, 576, 578, 625, 639, 648
Offset: 0
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Extensions
Definition corrected by N. J. A. Sloane, Apr 30 2015