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A127140 Square of triangle A127139, row sums = A101035. 2
1, -4, 1, -6, 0, 1, 4, -4, 0, 1, -10, 0, 0, 0, 1, 24, -6, -4, 0, 0, 1, -14, 0, 0, 0, 0, 0, 1, 0, 4, 0, -4, 0, 0, 0, 1, 9, 0, -6, 0, 0, 0, 0, 0, 1, 40, -10, 0, 0, -4, 0, 0, 0, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A101035: (1, -3, -5, 1, -9, 15,...). A127140 * [1, 2, 3,...] = A055615: (1, -2, -3, 0, -5, 6, -7,...)

LINKS

Table of n, a(n) for n=1..55.

FORMULA

Square of A127139

EXAMPLE

First few rows of the triangle are:

1;

-4, 1;

-6, 0, 1;

4, -4, 0, 1;

-10, 0, 0, 0, 1;

24, -6, -4, 0, 0, 1;

-14, 0, 0, 0, 0, 0, 1;

0, 4, 0, -4, 0, 0, 0, 1;

9, 0, -6, 0, 0, 0, 0, 0, 1;

...

CROSSREFS

Cf. A127139, A101035, A055615.

Sequence in context: A197915 A205074 A210491 * A010642 A127168 A176216

Adjacent sequences:  A127137 A127138 A127139 * A127141 A127142 A127143

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, Jan 06 2007

STATUS

approved

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Last modified January 29 16:58 EST 2020. Contains 331347 sequences. (Running on oeis4.)