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A128408
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Triangle read by rows: A128407 * A051731 as infinite lower triangular matrices.
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4
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1, -1, -1, -1, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, -1, 1, 1, 1, 0, 0, 1, -1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1
(list;
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refs;
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text;
internal format)
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OFFSET
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1,1
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COMMENTS
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Left and right borders = mu(n), A008683. Row sums = A008966: (1, -2, -2, 0, -2, 4, -2, 0, 0, 4, ...). A128408 * [1,2,3,...] = A063441: (1, -3, -4, 0, -6, 12, ...). A054524 = A051731 * A128407.
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LINKS
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EXAMPLE
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First few rows of the triangle:
1;
-1, -1;
-1, 0, -1;
0, 0, 0, 0;
-1, 0, 0, 0, -1;
1, 1, 1, 0, 0, 1;
...
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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a(45) = 0 inserted and more terms from Georg Fischer, Jun 05 2023
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STATUS
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approved
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