%I A137409
%S A137409 1,2,3,4,6,7,8,9,10,11,12,14,15,16,18,19,20,21,22,23,24,26
%N A137409 Numbers that cannot be the value of 'C' in a primitive pythagorean triple 
               (A < B; A^2+B^2=C^2).
%e A137409 3,4,5; number 5 is not in this sequence
%e A137409 5,12,13; number 13 is not in this sequence
%e A137409 8,15,17; number 17 is not in this sequence
%e A137409 7,24,25; number 25 is not in this sequence
%Y A137409 Cf. A137407, A020882
%Y A137409 Sequence in context: A101771 A035058 A004776 this_sequence A037041 A048263 
               A141451
%Y A137409 Adjacent sequences: A137406 A137407 A137408 this_sequence A137410 A137411 
               A137412
%K A137409 nonn
%O A137409 1,2
%A A137409 Vladimir Orlovsky (4vladimir(AT)gmail.com), Apr 14 2008