cp's OEIS Frontend

A181096 Permutation of positive integers created from sequence A018252(n) = nonprimes.

%I A181096 #2 Mar 30 2012 19:00:24
%S A181096 1,4,6,2,8,3,9,5,7,10,12,11,14,13,15,16,18,17,20,19,21,22,24,23,25,26,
%T A181096 27,28,30,29,32,31,33,34,35,36,38,37,39,40,42,41,44,43,45,46,48,47,49,
%U A181096 50,51,52,54,53,55,56,57,58,60,59,62,61,63,64,65,66,68,67,69,70,72,71
%N A181096 Permutation of positive integers created from sequence A018252(n) = nonprimes.
%C A181096 Method of creation of sequence a(n) from b(n) = A018252(n):
%C A181096 Take b(1) and put in vacancy place a(1), swap this place and b(1), repeat with b(2), b(3), ...:
%C A181096 b(1) = 1, a(1) = 1,
%C A181096 b(2) = 4, a(2) = 4, a(4) = 2,
%C A181096 b(3) = 6, a(3) = 6, a(6) = 3,
%C A181096 b(4) = 8, a(5) = 8, a(8) = 5,
%C A181096 b(5) = 9, a(7) = 9, a(9) = 7,
%C A181096 ...
%F A181096 a(n) = A135761(n) for n >= 11. a(n) = A181097(n) for n >= 11.
%K A181096 nonn
%O A181096 1,2
%A A181096 _Jaroslav Krizek_, Oct 02 2010