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A128408 A128407 * A051731. 4
1, -1, -1, -1, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, -1, 1, 1, 1, 0, 0, 1, -1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Left and right borders = mu(n), A008683. Row sums = A008966: (1, -2, -2, 0, -2, 4, -2, 0, 0, 4,...). A128408 * [1,2,3,...] = A063441: (1, -3, -4, 0, -6, 12,...). A054524 = A051731 * A128407.

LINKS

Table of n, a(n) for n=1..54.

FORMULA

A128407 * A051731 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

-1, -1;

-1, 0, -1;

0, 0, 0, 0;

-1, 0, 0, 0, -1;

1, 1, 1, 0, 0, 1;

...

CROSSREFS

Cf. A008683, A128407, A054524, A008966, A063441.

Sequence in context: A055132 A285403 A183918 * A121802 A156241 A156254

Adjacent sequences:  A128405 A128406 A128407 * A128409 A128410 A128411

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, Mar 01 2007

STATUS

approved

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Last modified April 3 14:25 EDT 2020. Contains 333197 sequences. (Running on oeis4.)