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A020683 Numbers of form 4 x^2 + 7 y^2. 0

%I

%S 0,4,7,11,16,23,28,32,36,43,44,63,64,67,71,79,92,99,100,107,112,116,

%T 127,128,144,148,151,163,172,175,176,179,191,196,203,207,211,212,224,

%U 239,252,256,259,263,268,275,284,288,308,316,319,324,331,343,347,352,359,368,371

%N Numbers of form 4 x^2 + 7 y^2.

%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)

%K easy,nonn

%O 1,2

%A _David W. Wilson_

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Last modified September 17 06:16 EDT 2021. Contains 347478 sequences. (Running on oeis4.)