A083929 Inverse function of N -> N injection A083930.

0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

Offset

0,50

Comments

a(0)=0 because A083930(0)=0, but a(n) = 0 also for those n which do not occur as values of A083930. All positive natural numbers occur here once.

It appears that A071661(n) = A083929(A071663(A083930(n))) and A071662 = A083929(A071664(A083930(n))).

Links

Table of n, a(n) for n=0..98.

Formula

a(n) = A083927(A083925(n)).

Crossrefs

a(A080930(n)) = n for all n. Cf. A083925-A083928, A083935.

Sequence in context: A374089 A104261 A028702 * A182660 A286100 A359431

Adjacent sequences: A083926 A083927 A083928 * A083930 A083931 A083932

Keyword

nonn

Author

Antti Karttunen, May 13 2003

Status

approved