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A292131
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).
3
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
OFFSET
0,8
LINKS
EXAMPLE
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, ...
CROSSREFS
Columns k=0..3 give A000007, A010815, A070877, A292128.
Rows n=0..1 give A000012, (-1)*A001477.
Main diagonal gives A292132.
Sequence in context: A355141 A171963 A357928 * A255740 A100995 A319273
KEYWORD
sign,tabl
AUTHOR
Seiichi Manyama, Sep 09 2017
STATUS
approved