%I #12 Mar 25 2015 01:57:32
%S 0,1,3,5,6,7,8,10,12,14,17,18,19,20,21,22,23,24,27,29
%N Nonnegative integers n for which the equation x^4 - n*x^2*y^2 + y^4 = z^2 has no solution in positive integers x, y, z, with x > y.
%H H. C. Pocklington, <a href="http://www.math.harvard.edu/~knill/various/eulercuboid/pocklington/index.html">Some Diophantine Impossibilities</a>, Proc. Cambridge Phil. Soc. 17 (1912), pp. 114-116.
%Y Cf. A253200.
%K nonn,more
%O 1,3
%A _Arkadiusz Wesolowski_, Mar 21 2015