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A165028
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Consider the base-4 Kaprekar map x->K(x) described in A165012. 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
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7
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OFFSET
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1,2
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COMMENTS
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Known values (to 200 base-4 digits):
a(1) = 0 (base 10) = 0 (base 4)
a(2) = 126 (base 10) = 1332 (base 4)
a(3) = 41958 (base 10) = 22033212 (base 4)
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LINKS
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CROSSREFS
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KEYWORD
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base,nonn,bref
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AUTHOR
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STATUS
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approved
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