A083926 Inverse function of N -> N injection A072795.

0, 0, 1, 0, 2, 3, 0, 0, 0, 4, 5, 6, 7, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 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, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44

Offset

0,5

Comments

a(1)=0 because A072795(0)=1, but a(n) = 0 also for those n which do not occur as values of A072795. All positive natural numbers occur here once.

Links

Table of n, a(n) for n=0..86.

Formula

a(n) = A083924(n)*A072772(n).

Crossrefs

a(A072795(n)) = n for all n. Cf. A083925, A083927-A083929, A083935.

Sequence in context: A286530 A152857 A097946 * A218757 A261430 A024466

Adjacent sequences: A083923 A083924 A083925 * A083927 A083928 A083929

Keyword

nonn

Author

Antti Karttunen, May 13 2003

Status

approved