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%I #12 May 01 2016 01:46:08
%S 1,2,3,4,5,8,6,16,7,32,9,64,10,128,12,256,11,512,18,1024,15,2048,24,
%T 4096,14,8192,27,16384,20,32768,36,65536,13,131072,48,262144,25,
%U 524288,54,1048576,21,2097152,72,4194304,30,8388608,81,16777216,22,33554432,96,67108864,40,134217728,108
%N Permutation of positive numbers. See comments.
%C a(1)=1; on places 2,4,6,8,... we put 2^m, m=1,2,3,..., i.e., numbers with the greatest prime divisor p_1=2; on places 3,7,11,15,... we put numbers with the greatest prime divisor p_2=3; on places 5,13,21,29,... we put numbers with the greatest prime divisor p_3=5; etc.
%C For general description of the order, see the comment in A207790.
%F For n>1, a(n) = A125624(A209268(n-1)). - _Ivan Neretin_, Apr 30 2016
%Y Cf. A207790, A207800, A207801.
%K nonn
%O 1,2
%A _Vladimir Shevelev_ and _Peter J. C. Moses_, Feb 20 2012
%E a(30) fixed by _Ivan Neretin_, Apr 30 2016
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