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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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1
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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; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| A version of an odd number transform.
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FORMULA
| 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
| First few rows of the triangle are:
1;
-3, 3;
0, -5, 5;
0, 0, -7, 7;
...
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CROSSREFS
| Cf. A126615.
Sequence in context: A140686 A116580 A096439 * A102899 A072689 A021972
Adjacent sequences: A128043 A128044 A128045 * A128047 A128048 A128049
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KEYWORD
| tabl,sign
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Feb 11 2007
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EXTENSIONS
| Edited by N. J. A. Sloane (njas(AT)research.att.com), Feb 26 2007
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