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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, 51, 54, 53, 60, 98, 58, 57, 72, 59, 100, 110, 68, 63, 66, 65 (list; graph; refs; listen; history; 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

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

CROSSREFS

Sequence in context: A096620 A093419 A160049 * A076535 A095359 A048724

Adjacent sequences:  A007476 A007477 A007478 * A007480 A007481 A007482

KEYWORD

easy,nonn,nice

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 17 18:01 EST 2012. Contains 206061 sequences.