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A143537
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Triangle read by rows: T(n,k) = number of primes in the interval [k..n], n >= 1, 1 <= k <= n.
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2
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0, 1, 1, 2, 2, 1, 2, 2, 1, 0, 3, 3, 2, 1, 1, 3, 3, 2, 1, 1, 0, 4, 4, 3, 2, 2, 1, 1, 4, 4, 3, 2, 2, 1, 1, 0, 4, 4, 3, 2, 2, 1, 1, 0, 0, 4, 4, 3, 2, 2, 1, 1, 0, 0, 0, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 0, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1
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OFFSET
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1,4
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COMMENTS
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LINKS
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FORMULA
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EXAMPLE
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Triangle T(n,k) begins:
n\k 1 2 3 4 5 6 7 8 ...
1: 0;
2: 1, 1;
3: 2, 2, 1;
4: 2, 2, 1, 0;
5: 3, 3, 2, 1, 1;
6: 3, 3, 2, 1, 1, 0;
7: 4, 4, 3, 2, 2, 1, 1;
8: 4, 4, 3, 2, 2, 1, 1, 0;
...
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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