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A128210
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Number triangle T(n,k) = (-1)^(n-k)*[k<=n]*Product_{i=k+1..n} Sum_{j=0..i-1} A078008(j-1).
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1
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1, -1, 1, 1, -1, 1, -3, 3, -3, 1, 15, -15, 15, -5, 1, -165, 165, -165, 55, -11, 1, 3465, -3465, 3465, -1155, 231, -21, 1, -148995, 148995, -148995, 49665, -9933, 903, -43, 1, 12664575, -12664575, 12664575
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OFFSET
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0,7
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COMMENTS
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LINKS
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EXAMPLE
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Triangle begins:
1;
-1, 1;
1, -1, 1;
-3, 3, -3, 1;
15, -15, 15, -5, 1;
-165, 165, -165, 55, -11, 1;
3465, -3465, 3465, -1155, 231, -21, 1;
-148995, 148995, -148995, 49665, -9933, 903, -43, 1;
...
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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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