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%I #4 Jun 29 2013 06:20:35
%S 1,2,5,3,4,9,6,11,54,8,7,10,19,12,72,21,14,23,84,16,25,13,18,29,15,22,
%T 33,17,26,37,156,28,39,30,41,190,32,45,34,47,218,36,51,20,40,57,42,59,
%U 27,44,24,46,284,48,286,31,50,292,52,77,300,79,35,81,85,56,87,58,89,60
%N a(n) is such that A099520(a(n))=n.
%e Gives the positions in the sequence A099520 at which the integers n>0 appear. A099520 begins: 1,2,4,5,3,7,11,10,6,12,8,..., so the positions of the integers are: 1,2,5,3,4,9,6,...
%Y Cf. A099520. Also A099506 and A099507 for sequences based on a slightly different definition.
%K easy,nonn
%O 1,2
%A Mark Hudson (mrmarkhudson(AT)hotmail.com), Oct 20 2004
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