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A106135
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Numbers k such that the k-th semiprime == 10 (mod k).
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0
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1, 2, 4, 12, 14, 64, 79, 81, 83, 84, 85, 6879, 6901, 613419, 613445, 613571, 613605, 58155568, 6384425499, 6384425501, 6384425551, 6384425553, 6384425635, 819217006167, 819217006202, 819217006763, 819217006854, 819217006872
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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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a(3)=12 is a term because the 12th semiprime (i.e., 34) == 10 (mod 12).
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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