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A292131
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Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of Product_{j>=1} (1 - k*x^j).
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3
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1, 1, 0, 1, -1, 0, 1, -2, -1, 0, 1, -3, -2, 0, 0, 1, -4, -3, 2, 0, 0, 1, -5, -4, 6, 2, 1, 0, 1, -6, -5, 12, 6, 6, 0, 0, 1, -7, -6, 20, 12, 15, -2, 1, 0, 1, -8, -7, 30, 20, 28, -12, 2, 0, 0, 1, -9, -8, 42, 30, 45, -36, -3, -6, 0, 0, 1, -10, -9, 56, 42, 66, -80
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,8
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LINKS
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Seiichi Manyama, Antidiagonals n = 0..139, flattened
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EXAMPLE
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Square array begins:
1, 1, 1, 1, 1, ...
0, -1, -2, -3, -4, ...
0, -1, -2, -3, -4, ...
0, 0, 2, 6, 12, ...
0, 0, 2, 6, 12, ...
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CROSSREFS
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Columns k=0..3 give A000007, A010815, A070877, A292128.
Rows n=0..1 give A000012, (-1)*A001477.
Main diagonal gives A292132.
Cf. A246935, A286957.
Sequence in context: A278528 A257261 A171963 * A255740 A100995 A319273
Adjacent sequences: A292128 A292129 A292130 * A292132 A292133 A292134
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KEYWORD
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sign,tabl
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AUTHOR
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Seiichi Manyama, Sep 09 2017
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STATUS
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approved
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