A181095 - OEIS

%I #2 Mar 30 2012 19:00:24

%S 1,2,3,5,4,7,6,11,13,17,8,19,9,23,29,31,10,37,12,41,43,47,14,53,59,61,

%T 67,71,15,73,16,79,83,89,97,101,18,103,107,109,20,113,21,127,131,137,

%U 22,139,149,151,157,163,24,167,173,179,181,191,25,193,26,197,199,211,223

%N Permutation of positive integers created from sequence A008578(n) = noncomposites.

%C Method of creation of sequence a(n) from b(n) = A008578(n):

%C Take b(1) and put in vacancy place a(1), swap this place and b(1), repeat with b(2), b(3), ...:

%C b(1) = 1, a(1) = 1,

%C b(2) = 2, a(2) = 2,

%C b(3) = 3, a(3) = 3,

%C b(4) = 5, a(4) = 5, a(5) = 4,

%C b(5) = 7, a(6) = 7, a(7) = 6,

%C ...

%F a(n) = A163465(n) for n >= 4. a(n) = A181094(n) for n >= 4.

%K nonn

%O 1,2

%A _Jaroslav Krizek_, Oct 02 2010