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URL: https://oeis.org/A389809

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A389809
Sequence containing k-1 occurrences of prime(k) ordered by k.
2
3, 5, 5, 7, 7, 7, 11, 11, 11, 11, 13, 13, 13, 13, 13, 17, 17, 17, 17, 17, 17, 19, 19, 19, 19, 19, 19, 19, 23, 23, 23, 23, 23, 23, 23, 23, 29, 29, 29, 29, 29, 29, 29, 29, 29, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37
OFFSET
1,1
COMMENTS
These are the denominators of the dense set of prime fractions discussed in A389586.
EXAMPLE
First 8 rows, as a triangle:
3
5 5
7 7 7
11 11 11 11
13 13 13 13 13
17 17 17 17 17 17
19 19 19 19 19 19 19
23 23 23 23 23 23 23 23
MATHEMATICA
Flatten[Table[Table[Prime[n], {n - 1}], {n, 12}]]
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Clark Kimberling, Oct 19 2025
STATUS
approved