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A128046 Triangle read by rows: inverse of the lower triangular matrix (1/1; 1/1, 1/3; 1/1, 1/3, 1/5;...). 1
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; text; internal format)
OFFSET

1,2

COMMENTS

A version of an odd number transform.

LINKS

Table of n, a(n) for n=1..36.

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,...)

EXAMPLE

First few rows of the triangle are:

1;

-3, 3;

0, -5, 5;

0, 0, -7, 7;

...

CROSSREFS

Cf. A126615.

Sequence in context: A096439 A256119 A217552 * A102899 A072689 A021972

Adjacent sequences:  A128043 A128044 A128045 * A128047 A128048 A128049

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, Feb 11 2007

EXTENSIONS

Edited by N. J. A. Sloane, Feb 26 2007

STATUS

approved

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Last modified April 11 00:03 EDT 2021. Contains 342877 sequences. (Running on oeis4.)