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Search: id:A128065
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| 1, 0, 2, -1, 2, 3, -2, 0, 6, 4, -3, -4, 6, 12, 5, -4, -10, 0, 20, 20, 6, -5, -18, -15, 20, 45, 30, 7, -6, -28, -42, 0, 70, 84, 42, 8, -7, -40, -84, -56, 70, 168, 240, 56, 9, -8, -54, -144, -168, 0, 252, 336, 216, 72, 10
(list; table; graph; listen)
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OFFSET
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1,3
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COMMENT
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A128064 * A007318 = A103406 Row sums = 2^(n-1)
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FORMULA
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A007318 * A128064 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
0, 2;
-1, 2, 3;
-2, 0, 6, 4;
-3, -4, 6, 12, 5;
...
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CROSSREFS
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Cf. A128064, A103406.
Sequence in context: A008313 A111377 A014046 this_sequence A018194 A105203 A059131
Adjacent sequences: A128062 A128063 A128064 this_sequence A128066 A128067 A128068
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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 14 2007
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