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A300557
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a(n) is the concatenation 1 written in base 2 once, 2 written in base 2 twice, ..., n written in base 2 n times.
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3
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1, 11010, 11010111111, 11010111111100100100100, 11010111111100100100100101101101101101, 11010111111100100100100101101101101101110110110110110110, 11010111111100100100100101101101101101110110110110110110111111111111111111111
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OFFSET
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1,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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