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Search: id:A110242
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| 1, 1, 1, -1, -1, 1, -1, -1, 0, 1, 1, 1, 1, 1, 1, 1, 1, -1, 0, -1, 1, -1, -1, 0, -1, 1, 0, 1, -1, -1, -1, 1, 0, -1, 1, 1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, -1, -1, -1, 0, 1, -1, 1, -1, 0, 1, 1, -1, -1, 1, -1, -1, -1, 0, 1, 1, 1, -1, 1, 1, 1, 0, -1, -1, 0, 1, 1, 0, -1, -1, 0, 1
(list; table; graph; listen)
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OFFSET
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0,1
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COMMENT
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Row sums are A110243. Diagonal sums are A110244. Inverse is A110245.
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FORMULA
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Number triangle T(n, k)=if(k<=n, Jacobi(n, 2n-2k+1), 0)
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EXAMPLE
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Rows begin
1;
1,1;
-1,-1,1;
-1,-1,0,1;
1,1,1,1,1;
1,1,-1,0,-1,1;
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CROSSREFS
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Sequence in context: A077010 A166280 A070887 this_sequence A131364 A054527 A137794
Adjacent sequences: A110239 A110240 A110241 this_sequence A110243 A110244 A110245
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KEYWORD
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easy,sign,tabl
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Jul 17 2005
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