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A165067
Consider the base-6 Kaprekar map x->K(x) described in A165051. Sequence gives the smallest number that belongs to a cycle of length n under repeated iteration of this map, or -1 if there is no cycle of length n
7
0, 4305, 16840
OFFSET
1,2
COMMENTS
Known values (to 100 base-6 digits):
a(1) = 0 (base 10) = 0 (base 6)
a(2) = 4305 (base 10) = 31533 (base 6)
a(3) = 16840 (base 10) = 205544 (base 6)
a(6) = 430 (base 10) = 1554 (base 6)
a(7) = 895275 (base 10) = 31104443 (base 6)
CROSSREFS
In other bases: A153881 (base 2), A165008 (base 3), A165028 (base 4), A165047 (base 5), A165086 (base 7), A165106 (base 8), A165126 (base 9), A151959 (base 10).
Sequence in context: A124596 A224522 A210263 * A236881 A190929 A055153
KEYWORD
base,nonn,bref
AUTHOR
Joseph Myers, Sep 04 2009
STATUS
approved