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A083935 Inverse function of N -> N injection A083934. 7
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 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, 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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,16

COMMENTS

a(0)=0 because A083934(0)=0, but a(n) = 0 also for those n which do not occur as values of A083934. All positive natural numbers occur here once.

LINKS

Table of n, a(n) for n=0..100.

PROG

(MIT Scheme:) (define (A083935 n) (let* ((b (A014486 n)) (c (if (zero? (modulo b 3)) (A059905 (/ b 3)) 0))) (if (zero? (A059906 (/ b 3))) (A080300 c) 0)))

CROSSREFS

a(A080934(n)) = n for all n. Cf. A083925-A083929, A014486, A080300, A059905, A059906.

Sequence in context: A186034 A280843 A221146 * A053201 A028605 A319532

Adjacent sequences:  A083932 A083933 A083934 * A083936 A083937 A083938

KEYWORD

nonn

AUTHOR

Antti Karttunen May 13 2003

STATUS

approved

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Last modified July 5 20:01 EDT 2020. Contains 335473 sequences. (Running on oeis4.)