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%I #4 Mar 30 2012 17:37:41
%S 1,2,3,4,7,6,5,8,9,12,17,10,11,14,13,21,15,16,19,23,22,20,24,30,31,25,
%T 28,29,36,18,33,35,26,27,59,34,40,37,38,41,53,32,42,50,46,43,51,39,48,
%U 45,44,47,57,49,63,52,61,62,55,56,65,54,67,74,88,58,75,60,69,64
%N a(n) is the solution of the equation A073666(x) = n (A073666(a(n)) = n).
%C For each n number of solutions of the equation A073666(x) =n is less than 2 because the terms of the sequence A073666 are distinct. Conjecture: This sequence is infinite(see A073666).
%Y Cf. A073666, A081942, A081943, A092829.
%K nonn
%O 1,2
%A _Farideh Firoozbakht_, Apr 15 2004