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A127573
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Triangle T(n, k) = k*sigma(k) if k divides n, else 0.
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1
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1, 1, 6, 1, 0, 12, 1, 6, 0, 28, 1, 0, 0, 0, 30, 1, 6, 12, 0, 0, 72, 1, 0, 0, 0, 0, 0, 56, 1, 6, 0, 28, 0, 0, 0, 120, 1, 0, 12, 0, 0, 0, 0, 0, 117, 1, 6, 0, 0, 30, 0, 0, 0, 0, 180, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 132, 1, 6, 12, 28, 0, 72, 0, 0, 0, 0, 0, 336
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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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EXAMPLE
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First few rows of the triangle:
1;
1, 6;
1, 0, 12;
1, 6, 0, 28;
1, 0, 0, 0, 30;
...
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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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