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A110802
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a(1) =1, a(n) = k* concatenation of a(1), a(2), ...a(n-1), where k is the number of digits in the concatenation.
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1
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OFFSET
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1,3
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LINKS
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EXAMPLE
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a(2) = 1*1 = 1, a(3) = 11*2 = 22, a(4) = 1122*4 = 4488.
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CROSSREFS
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KEYWORD
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base,easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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