%I A109474
%S A109474 1,3,4,13,14,23,24,33,34,43,44,53,54,63,64,73,74,83,84,93,94,103,104,
%T A109474 113,114,123,124,133,134,143,144,153,154,163,164,173,174,183,184,193,194,
%U A109474 203,204,213,214,223,224,233,234,243,244,253,254,263,264,273,274,283,284
%N A109474 a(n) = least positive integer > a(n-1) and not equal to a(i)+a(j)+a(k) 
               for 1<=i<=j<=k<=n.
%C A109474 This was the original definition of A026476, but the terms there did 
               not match this definition.
%C A109474 Except for the first term, a(n)=10*n-a(n-1)-13 (with a(1)=3) [From Vincenzo 
               Librandi (vincenzo.librandi(AT)tin.it), Nov 26 2009]
%F A109474 max{1, 5*n-9+2*(-1)^n}.
%Y A109474 Sequence in context: A082197 A138101 A095790 this_sequence A053910 A105074 
               A087884
%Y A109474 Adjacent sequences: A109471 A109472 A109473 this_sequence A109475 A109476 
               A109477
%K A109474 nonn,new
%O A109474 1,2
%A A109474 Bela Bajnok (bbajnok(AT)gettysburg.edu), Aug 10 2005