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Numbers of form 4 x^2 + 9 y^2.
2

%I #9 Jun 08 2014 15:35:40

%S 0,4,9,13,16,25,36,40,45,52,64,72,73,81,85,97,100,109,117,136,144,145,

%T 148,153,160,180,181,196,205,208,225,229,232,241,244,256,261,265,277,

%U 288,289,292,324,325,328,333,337,340,360,369,388,400,405,409,421,424,436,441

%N Numbers of form 4 x^2 + 9 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_