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1, 1, 2, 1, 2, 3, 4, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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COMMENTS
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LINKS
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FORMULA
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Integers 1 to A006093(1) inclusive, followed by integers 1 to A006093(2) inclusive, etc.
T(n,k)=k for n >= 1 and 1 <= k < prime(n).
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MATHEMATICA
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Table[Range[Prime[n] - 1], {n, 9}] // Flatten (* or, per title definition: *)
#/Times @@ (FactorInteger[#][[All, 1]]) & /@ Flatten@ Table[Range[Prime[n + 1] - 1] Apply[Times, Prime@ Range@ n], {n, 0, 8}] (* Michael De Vlieger, Jul 26 2016 *)
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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