A242655 - OEIS

%I #11 Jul 04 2014 11:44:45

%S 0,2,3,7,8,12,15,18,27,28,32,35,42,43,47,48,50,58,60,63,72,75,82,83,

%T 87,90,98,103,107,108,112,115,122,123,128,135,138,140,147,162,163,167,

%U 168,172,175,183,188,192,200,202,203,207,210,218,223,232,235,240,242,243,252,258,263,267,282,283,287,288,290,298,300

%N Numbers of the form 2x^2+2xy+3y^2 with x and y nonnegative.

%C Discriminant = -20.

%H N. J. A. Sloane et al., <a href="https://oeis.org/wiki/Binary_Quadratic_Forms_and_OEIS">Binary Quadratic Forms and OEIS</a> (Index to related sequences, programs, references)

%Y For primes see A106864. Cf. A029718, A106865.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, May 30 2014