A085200 Inverse function of N -> N injection A071155.

0, 1, 0, 2, 0, 3, 0, 0, 0, 4, 0, 6, 0, 0, 0, 5, 0, 7, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 14, 0, 0, 0, 11, 0, 16, 0, 0, 0, 0, 0, 19, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 15, 0, 0, 0, 12, 0, 17, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13, 0, 18, 0, 0, 0, 0, 0, 21, 0, 0, 0

Offset: 0

Author

Antti Karttunen, Jun 23 2003

Keywords

• nonn

Comments

a(0)=0 because A071155(0)=0, but a(n) = 0 also for those n which do not occur as values of A071155. All positive natural numbers occur here once.

Crossrefs

a(A071155(n)) = n for all n. Cf. A080300.