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A075176 Inverse function of N -> N injection A075175. 4

%I

%S 1,2,3,6,0,4,0,12,5,10,15,30,0,20,0,60,0,0,9,18,0,0,0,36,0,0,45,90,0,

%T 0,0,180,0,0,0,0,0,8,0,24,0,0,0,0,0,40,0,120,0,0,0,0,0,0,0,72,0,0,0,0,

%U 0,0,0,360,7,14,21,42,0,28,0,84,35,70,105,210,0,140,0,420,0,0,63,126,0,0

%N Inverse function of N -> N injection A075175.

%C a(n) = 0 for those n which do not occur as the values of A075175. All positive natural numbers occur here once.

%Y a(A075175(n)) = n for all n >= 1. Differs from A075174 for first time at a(18) = 9, while A075174(18) = 0.

%K nonn

%O 0,2

%A _Antti Karttunen_, Sep 13 2002

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Last modified September 22 16:45 EDT 2021. Contains 347607 sequences. (Running on oeis4.)