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A085199 Inverse function of N -> N injection A071156. 1
0, 1, 0, 2, 0, 3, 0, 0, 0, 4, 0, 5, 0, 0, 0, 6, 0, 7, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 10, 0, 0, 0, 11, 0, 12, 0, 0, 0, 0, 0, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 0, 15, 0, 0, 0, 16, 0, 17, 0, 0, 0, 0, 0, 18, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 19, 0, 20, 0, 0, 0, 0, 0, 21, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

a(0)=0 because A071156(0)=0, but a(n) = 0 also for those n which do not occur as values of A071156. All positive natural numbers occur here once.

LINKS

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

FORMULA

a(n) = A057164(A085200(n))

CROSSREFS

a(A071156(n)) = n for all n.

Sequence in context: A142971 A104117 A114511 * A085200 A080024 A035199

Adjacent sequences:  A085196 A085197 A085198 * A085200 A085201 A085202

KEYWORD

nonn

AUTHOR

Antti Karttunen Jun 14 2003

STATUS

approved

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Last modified April 8 14:52 EDT 2020. Contains 333314 sequences. (Running on oeis4.)