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Search: id:A128256
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| 1, -1, 1, 2, 0, 1, -2, 2, 1, 1, 3, 0, 3, 2, 1, -3, 3, 3, 5, 3, 1, 4, 0, 6, 8, 8, 4, 1, -4, 4, 6, 14, 16, 12, 5, 1, 5, 0, 10, 20, 30, 28, 17, 6, 1, -5, 5, 10, 30, 50, 58, 45, 23, 7, 1
(list; table; graph; listen)
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OFFSET
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1,4
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COMMENT
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Row sums = A053088: (1, 0, 3, 2, 9, 12, 31, 54, 117,...)
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FORMULA
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A004736(with alternate signs: (1; -2,1; 3,-2,1;...) * A007318, Pascal's triangle.
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EXAMPLE
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First few rows of the triangle are:
1;
-1, 1;
2, 0, 1;
-2, 2, 1, 1;
3, 0, 3, 2, 1;
-3, 3, 3, 5, 3, 1;
4, 0, 6, 8, 8, 4, 1;
-4, 4, 6, 14, 16, 12, 5, 1;
5, 0, 10, 10, 30, 28, 17, 6, 1;
...
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CROSSREFS
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Cf. A004736, A007318, A053088.
Adjacent sequences: A128253 A128254 A128255 this_sequence A128257 A128258 A128259
Sequence in context: A113678 A110249 A067460 this_sequence A065051 A084665 A035392
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KEYWORD
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tabl,sign
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Feb 21 2007
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