A097755 - OEIS

%I #8 Jan 15 2013 12:15:40

%S 1,2,3,4,6,8,9,12,16,18,21,24,27,32,36,42,48,54,63,64,72,81,84,96,108,

%T 126,128,144,162,168,189,192,216,231,243,252,256,288,324,336,378,384,

%U 432,441,462,486,504,512,567,576,648,672,693,729,756,768,864,882,924

%N Least integer "mod 4 prime signature" values that are the hypotenuse of no Pythagorean triples.

%C See A097751 for definition of "mod 4 prime signature".

%C Row 0 of table described in A097753; terms of A097752 with no prime factor of form 4k+1.

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

%Y Cf. A097751, A097752, A097753, A097754, A097756.

%K nonn

%O 1,2

%A _Ray Chandler_, Aug 26 2004

%E Correct offset. _Ray Chandler_, Jan 15 2013