%I #2 May 01 2014 02:44:55
%S 1,2,3,6,0,4,0,12,5,10,15,30,0,20,0,60,0,0,0,0,0,8,0,24,0,0,0,0,0,40,
%T 0,120,0,0,9,18,0,0,0,36,0,0,45,90,0,0,0,180,0,0,0,0,0,0,0,72,0,0,0,0,
%U 0,0,0,360,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,16,0,48,0,0,0,0,0
%N Inverse function of N -> N injection A075173.
%C a(n) = 0 for those n which do not occur as the values of A075173. All positive natural numbers occur here once.
%Y a(A075173(n)) = n for all n >= 1. Differs from A075176 for first time at a(18) = 0, while A075176(18) = 9.
%K nonn
%O 0,2
%A _Antti Karttunen_, Sep 13 2002