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A103117 Berend Jan van der Zwaag's conjectured complete list of numbers that start different "expanding periodic loops" under the mapping described in A053392 and A060630. 2
3871, 7777, 9911, 9921, 9922, 9931, 9933, 9941, 9951, 9955, 9961, 9966, 9971, 9977, 9981, 9988, 9999, 66642, 66651, 66661, 66666, 66678, 66681, 66691 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See link for the precise definition.

LINKS

Table of n, a(n) for n=1..24.

Lars Blomberg, All 160 members of all expanding cycles

Erich Friedman, Problem of the Month (Feb 2000)

CROSSREFS

Cf. A053392, A060630.

Sequence in context: A257780 A068267 A205409 * A204791 A204784 A204783

Adjacent sequences:  A103114 A103115 A103116 * A103118 A103119 A103120

KEYWORD

base,nonn,fini,full

AUTHOR

N. J. A. Sloane, Sep 06 2008

EXTENSIONS

9966 inserted by Lars Blomberg, Aug 26 2011

STATUS

approved

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Last modified September 24 22:46 EDT 2021. Contains 347651 sequences. (Running on oeis4.)