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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
OFFSET
1,1
COMMENTS
See link for the precise definition.
CROSSREFS
Sequence in context: A257780 A068267 A205409 * A204791 A204784 A204783
KEYWORD
base,nonn,fini,full
AUTHOR
N. J. A. Sloane, Sep 06 2008
EXTENSIONS
9966 inserted by Lars Blomberg, Aug 26 2011
STATUS
approved