%I #11 Aug 22 2014 14:13:08
%S 0,7,9,16,28,36,37,43,63,64,72,81,88,99,109,112,121,144,148,151,172,
%T 175,184,193,207,211,225,232,252,253,256,261,288,319,324,331,333,337,
%U 343,352,379,387,396,400,424,436,441,448,457,469,477,484,487,499,504,529,553,567
%N Numbers of form 7 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)
%t Take[Union[7#[[1]]+9#[[2]]&/@Tuples[Range[0,20]^2,2]],60] (* _Harvey P. Dale_, Aug 22 2014 *)
%K easy,nonn
%O 1,2
%A _David W. Wilson_
|