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Search: id:A128046
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| A128046 |
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Triangle read by rows: inverse of the lower triangular matrix (1/1; 1/1, 1/3; 1/1, 1/3, 1/5;...). |
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+0
2
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| 1, -3, 3, 0, -5, 5, 0, 0, -7, 7, 0, 0, 0, -9, 9, 0, 0, 0, 0, -11, 11, 0, 0, 0, 0, 0, -13, 13, 0, 0, 0, 0, 0, 0, -15, 15
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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A version of an odd number transform.
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FORMULA
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Triangle read by rows, replace the right border (1, 2, 3,...) of A126615 with (1, 3, 5,...) and the adjacent diagonal (-2, -3, -4,...) with (-3, -5, -7,...)
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EXAMPLE
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First few rows of the triangle are:
1;
-3, 3;
0, -5, 5;
0, 0, -7, 7;
...
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CROSSREFS
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Cf. A126615.
Sequence in context: A140686 A116580 A096439 this_sequence A102899 A072689 A021972
Adjacent sequences: A128043 A128044 A128045 this_sequence A128047 A128048 A128049
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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 11 2007
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EXTENSIONS
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Edited by N. J. A. Sloane (njas(AT)research.att.com), Feb 26 2007
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