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Search: id:A128315
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| 1, 0, 1, 2, -2, 1, -1, 4, -3, 1, 2, -4, 6, -4, 1, 0, 4, -9, 10, -5, 1, 2, -6, 15, -20, 15, -6, 1, -2, 11, -24, 36, -35, 21, -7, 1, 3, -10, 29, -56, 70, -56, -8, 1, 0, 6, -30, 80, -125, 126, -84, 36, -9, 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 = (1,1,1...); left column = A048272: (1, 0, 2, -1, 2, 0, 2,...). A128316 = A000012 * A128315.
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FORMULA
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A051731 * A007318 as infinite lower triangular matrices. A007318 is signed (+, -, +,...) by columns.
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EXAMPLE
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First few rows of the triangle are:
1;
0, 1;
2, -2, 1;
-1, 4, -3, 1;
2, -4, 6, -4, 1;
0, 4, -9, 10, -5, 1;
...
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CROSSREFS
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Cf. A051731, A007318, A048272, A128316.
Sequence in context: A064285 A006694 A116595 this_sequence A123566 A053390 A140643
Adjacent sequences: A128312 A128313 A128314 this_sequence A128316 A128317 A128318
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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 25 2007
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