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A078879
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Triangle read by rows: T(n,k) = ceiling(k^2 / n), 0 < k <= n.
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0
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0, 1, 0, 1, 2, 0, 1, 1, 3, 0, 1, 1, 2, 4, 0, 1, 1, 2, 3, 5, 0, 1, 1, 2, 3, 4, 6, 0, 1, 1, 2, 2, 4, 5, 7, 0, 1, 1, 1, 2, 3, 4, 6, 8, 0, 1, 1, 1, 2, 3, 4, 5, 7, 9, 0, 1, 1, 1, 2, 3, 4, 5, 6, 8, 10, 0, 1, 1, 1, 2, 3, 3, 5, 6, 7, 9, 11, 0, 1, 1, 1, 2, 2, 3, 4, 5, 7, 8, 10, 12, 0, 1, 1, 1, 2, 2, 3, 4, 5, 6, 8, 9, 11
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,5
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LINKS
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EXAMPLE
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0;
1, 0;
1, 2, 0;
1, 1, 3, 0;
1, 1, 2, 4, 0;
...
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PROG
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(PARI) {T(n, k) = if( n<1 || k>=n, 0, ceil(k^2 / n))}
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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