%I A133137
%S A133137 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,18,19,20,21,22,23,24,25,26,27,
%T A133137 28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,
%U A133137 51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73
%N A133137 a(1) = 1, a(2) = 2, a(n) = smallest number not the sum of 4th powers 
               of 2 distinct earlier terms.
%C A133137 This is to A000583 as A031980 is to A000578. First differs from complement 
               of A088687 at 83522 = 1^4 + 17^4.
%Y A133137 Cf. A000583, A031980, A088687.
%Y A133137 Sequence in context: A113219 A023771 A132033 this_sequence A160543 A023810 
               A102800
%Y A133137 Adjacent sequences: A133134 A133135 A133136 this_sequence A133138 A133139 
               A133140
%K A133137 easy,nonn
%O A133137 1,2
%A A133137 Jonathan Vos Post (jvospost3(AT)gmail.com), Sep 21 2007