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A075174 Inverse function of N -> N injection A075173. 6

%I

%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

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Last modified September 20 04:16 EDT 2021. Contains 347577 sequences. (Running on oeis4.)