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A083929 Inverse function of N -> N injection A083930. +0
7
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 (list; graph; listen)
OFFSET

0,50

COMMENT

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))).

FORMULA

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

CROSSREFS

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

Sequence in context: A112314 A104261 A028702 this_sequence A122698 A002483 A060478

Adjacent sequences: A083926 A083927 A083928 this_sequence A083930 A083931 A083932

KEYWORD

nonn

AUTHOR

Antti Karttunen (MyFirstname.MySurname(AT)iki.fi) May 13 2003

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.


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