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1, 1, 0, 1, -1, 0, 1, 0, -1, 0, 1, -1, -1, 0, 0, 1, 0, 0, 0, -1, 0, 1, -1, -1, 0, -1, 1, 0, 1, 0, -1, 0, -1, 0, -1, 0, 1, -1, 0, 0, -1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 0, -1, 0, 0, 0
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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Row sums = A112399: (1, 1, 0, 0, -1, 0, -1, -2, -2, -1,...)
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LINKS
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Table of n, a(n) for n=1..55.
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FORMULA
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A054521 * A128407 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
1, 0;
1, -1, 0;
1, 0, -1, 0;
1, -1, -1, 0, 0;
1, 0, 0, 0, -1, 0;
1, -1, -1, 0, -1, 1, 0;
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CROSSREFS
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Cf. A054521, A128407, A112399, A008683.
Sequence in context: A143242 A136442 A168030 * A054521 A014240 A014471
Adjacent sequences: A128428 A128429 A128430 * A128432 A128433 A128434
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KEYWORD
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tabl,sign
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AUTHOR
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Gary W. Adamson, Mar 03 2007
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STATUS
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approved
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