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Antisquares: of the form a*p^k where p is prime, k is odd and a is nonsquare modulo p.
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%I #8 Jan 11 2013 17:42:39

%S 6,10,15,21,22,24,26,33,35,38,40,42,51,54,57,58,60,65,66,69,70,74,77,

%T 78,84,85,86,87,88,90,91,93,96,102,104,105,106,110,114,115,118,119,

%U 122,123,129,132,133,134,135,140,141,143,150,152,159,160,161,165,166,168,170

%N Antisquares: of the form a*p^k where p is prime, k is odd and a is nonsquare modulo p.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/AntisquareNumber.html">Antisquare Number.</a>

%e 135 = 5*3^3 is antisquare.

%K nonn

%O 1,1

%A _David W. Wilson_, Feb 10 2003