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A084685 a(n) is the least x such that length of fixed-point-list when function-A085307[] was iterated and started at a(n) equals n. 0
2, 4, 6, 14, 22, 115, 55, 105, 155, 145, 341, 501, 489, 143, 437, 301, 395, 665 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

EXAMPLE

Some lists of iterated values started at a(n):

n=1: a(1)=first prime; n=2: a(2)=first true prime factor;

n=3: a(3)=first 2^j.3^i number, that is 6;

n=5: {22,112,72,32,2}

n=12: length=a(12); iv=501; fixed-point=1354674597313; list as follows

{501, 1673, 2397, 47173, 293237, 2571637, 23593109, 273116353, 522211523, 8866073119, 57914987307, 1354674597313}

CROSSREFS

Cf. A085307, A085308, A085309, A085317-A085323.

Sequence in context: A284886 A249339 A307676 * A219042 A325868 A251581

Adjacent sequences:  A084682 A084683 A084684 * A084686 A084687 A084688

KEYWORD

base,nonn

AUTHOR

Labos Elemer, Jul 16 2003

STATUS

approved

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Last modified November 12 04:21 EST 2019. Contains 329051 sequences. (Running on oeis4.)