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A104669
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Smallest semiprime containing exactly n 2's.
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1
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21, 22, 2122, 20222, 202222, 1222222, 22220222, 122222222, 2222222221, 22222222226, 202222222222, 2222212222222, 22222222222223, 212222222222222, 2222222222212222, 22222222202222222, 202222222222222222
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OFFSET
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1,1
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LINKS
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EXAMPLE
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a(2)=22 because 22 is the smallest semiprime containing exactly two 2's.
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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STATUS
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approved
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