A075176 Inverse function of N -> N injection A075175.

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, 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, 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

Offset

0,2

Comments

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

Links

Table of n, a(n) for n=0..85.

Crossrefs

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

Sequence in context: A078682 A331205 A075174 * A134972 A078890 A021813

Adjacent sequences: A075173 A075174 A075175 * A075177 A075178 A075179

Keyword

nonn

Author

Antti Karttunen, Sep 13 2002

Status

approved