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Search: id:A127949
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| A127949 |
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A000012 as an infinite lower triangular matrix with all 1's; A127899 = a simple transform; then A000012 * A127899. Given A051340, change all 1's to -1. Triangle read by rows, (n-1) -1's followed by "n". |
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+0
2
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| 1, -1, 2, -1, -1, 3, -1, -1, -1, 4, -1, -1, -1, -1, 5, -1, -1, -1, -1, -1, 6, -1, -1, -1, -1, -1, -1, 7
(list; table; graph; listen)
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OFFSET
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1,3
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COMMENT
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For the inverse of A127949 see A126615, a harmonic triangle.
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EXAMPLE
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First few rows of the triangle are:
1;
-1, 2;
-1, -1, 3;
-1, -1, -1, 4;
...
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CROSSREFS
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Cf. A000012, A127899, A051340, A126615.
Adjacent sequences: A127946 A127947 A127948 this_sequence A127950 A127951 A127952
Sequence in context: A135010 A138138 A080209 this_sequence A051340 A105535 A108888
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KEYWORD
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tabl,sign,easy,more
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Feb 09 2007
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