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Numbers of form 9 x^2 + 10 y^2.
2

%I #13 Jun 11 2019 10:52:49

%S 0,9,10,19,36,40,46,49,76,81,90,91,99,121,126,144,154,160,169,171,184,

%T 196,225,234,235,241,250,259,265,286,304,315,324,331,334,360,364,369,

%U 385,394,396,414,441,451,475,481,484,490,499,504,526,531,571,574,576,585,586

%N Numbers of form 9 x^2 + 10 y^2.

%H Harvey P. Dale, <a href="/A020694/b020694.txt">Table of n, a(n) for n = 1..1000</a>

%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 9#[[1]]+10#[[2]]&/@Tuples[Range[0,10]^2,2]//Union (* _Harvey P. Dale_, Jun 11 2019 *)

%K easy,nonn

%O 1,2

%A _David W. Wilson_