%I

%S 1,1,3,5,6,7,9,10,12,14,15,17,18,20,21,23,24,25,27,28,30,31,33,34,36,

%T 37,39,40,42,43,45,46,48,50,51,53,54,56,57,59,60,62,63,65,66,68,69,71,

%U 72,74,75,77,78,80,81,83,84,86,87,89,90,92,93,95,96,97

%N a(1)=a(2)=1; for n > 2, a(n) is the smallest number > a(n-1) which is not the sum of 2 consecutive elements of the sequence.

%K easy,nonn

%O 1,3

%A Gaetan Polard (gaetan27(AT)hotmail.com), Nov 18 2004