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A263623
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a(1)=1; thereafter, a(n) = smallest k such that the decimal concatenation [a(n-2)+1 a(n-2)+2, ... a(n-1)] divides the decimal concatenation [a(n-1)+1 a(n-1)+2 ... k].
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1
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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n=3: a(3) = 4 because k=4 is the smallest number such that 2 divides the concatenation 345...k.
n=4: a(4) = 8 because k=8 is the smallest number such that 34 divides the concatenation 567...k. See A002782 for the relevant concatenations.
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CROSSREFS
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KEYWORD
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nonn,base,more
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AUTHOR
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STATUS
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approved
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