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A286656
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Square array A(n,k), n>=0, k>=1, read by antidiagonals, where column k is the expansion of Product_{j>=1} (1 - x^j)/(1 - x^(k*j)).
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1
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1, 1, 0, 1, -1, 0, 1, -1, 0, 0, 1, -1, -1, -1, 0, 1, -1, -1, 1, 1, 0, 1, -1, -1, 0, -1, -1, 0, 1, -1, -1, 0, 1, 0, 1, 0, 1, -1, -1, 0, 0, 0, 2, -1, 0, 1, -1, -1, 0, 0, 2, -1, -1, 2, 0, 1, -1, -1, 0, 0, 1, -1, 1, -1, -2, 0, 1, -1, -1, 0, 0, 1, 1, 0, 2, 3, 2, 0, 1
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OFFSET
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0,43
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LINKS
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FORMULA
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G.f. of column k: Product_{j>=1} (1 - x^j)/(1 - x^(k*j)).
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EXAMPLE
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Square array begins:
1, 1, 1, 1, 1, ...
0, -1, -1, -1, -1, ...
0, 0, -1, -1, -1, ...
0, -1, 1, 0, 0, ...
0, 1, -1, 1, 0, ...
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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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