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A007479 Earliest sequence with a(a(a(n))) = 2n.
(Formerly M2513)
0
0, 3, 6, 5, 12, 2, 10, 9, 24, 11, 4, 14, 20, 15, 18, 17, 48, 26, 22, 21, 8, 23, 28, 38, 40, 27, 30, 29, 36, 50, 34, 33, 96, 35, 52, 62, 44, 39, 42, 41, 16, 74, 46, 45, 56, 47, 76, 86, 80, 51, 54, 53, 60, 98, 58, 57, 72, 59, 100, 110, 68, 63, 66, 65 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=0..63.

Index entries for sequences of the a(a(n)) = 2n family

FORMULA

a(0) = 0, a(2*n) = 2*a(n), a(6*n+1) = 6*n+3, a(6*n+3) = 6*n+5, a(6*n+5) = 12*n+2. - Sean A. Irvine, Jan 05 2018

CROSSREFS

Cf. A002516.

Sequence in context: A093419 A160049 A299209 * A076535 A285327 A239487

Adjacent sequences:  A007476 A007477 A007478 * A007480 A007481 A007482

KEYWORD

easy,nonn,nice

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Missing a(48) = 80 inserted by Sean A. Irvine, Jan 05 2018

STATUS

approved

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Last modified January 17 10:30 EST 2019. Contains 319218 sequences. (Running on oeis4.)