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a(n) = position of n in A076991.
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%I #2 Mar 30 2012 17:26:29

%S 1,2,14,10,27,3,68,4,21,16,5,44,23,22,48,38,6,17,42,170,7,24,63,193,

%T 13,8,40,87,25,26,19,75,53,9,41,15,61,39,47,62,20,45,11,60,33,28,118,

%U 114,29,66,167,120,12,86,137,92,175,64,78,77,84,58,59,148,90,267,37,50,82

%N a(n) = position of n in A076991.

%C A076991 is conjectured to be a permutation of the positive integers.

%Y Cf. A076991 a(1) = 1, a(2) = 2, a(n) = smallest positive integer not occurring earlier such that the sum of three successive terms is a square.

%K nonn

%O 1,2

%A _Zak Seidov_, Mar 26 2009