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A106134
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Numbers k such that the k-th semiprime == 9 (mod k).
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1
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1, 3, 5, 6, 13, 15, 80, 86, 6905, 6907, 6908, 6913, 6917, 613373, 613409, 613420, 613421, 613430, 613506, 613534, 613573, 613578, 613600, 58155529, 58155553, 6384425450, 6384425452, 6384425462, 6384425495, 6384425507, 6384425515, 6384425554, 6384425578, 6384425648
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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(5)=13 is a term because the 13th semiprime (i.e., 35) == 9 (mod 13).
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CROSSREFS
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KEYWORD
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nonn,hard
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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