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A123065 Numbers primitively represented by the quadratic form 2 x^2 + xy + 4 y^2. 4

%I

%S 2,4,5,7,10,14,16,19,20,25,28,32

%N Numbers primitively represented by the quadratic form 2 x^2 + xy + 4 y^2.

%D J. H. Conway, The Sensual (Quadratic) Form, M.A.A., 1997, p. 82.

%Y Cf. A123063, A123064, A123067, A123068.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Sep 27 2006

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Last modified October 16 15:18 EDT 2021. Contains 348042 sequences. (Running on oeis4.)