A123065 Numbers primitively represented by the quadratic form 2 x^2 + xy + 4 y^2.
2, 4, 5, 7, 10, 14, 16, 19, 20, 25, 28, 32
Offset: 1
Keywords
References
- J. H. Conway, The Sensual (Quadratic) Form, M.A.A., 1997, p. 82.
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