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A127253 Product of number triangles A127243 and A127248. 1
1, 0, 1, -1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, -1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Row sums are A127254. Rows containing -1 entries are indexed by twice the odious numbers given by A091855.

LINKS

Table of n, a(n) for n=0..90.

EXAMPLE

Triangle begins

1,

0, 1,

-1, 0, 1,

0, 0, 0, 1,

0, 0, 0, 0, 1,

0, 0, 0, 0, 0, 1,

0, 0, 0, 0, 0, 0, 1,

0, 0, 0, 0, 0, 0, 0, 1,

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

0, 0, 0, 0, 0, 0, 0, 0, 0, 1,

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1

CROSSREFS

Sequence in context: A120526 A086694 A093317 * A117944 A117945 A128937

Adjacent sequences:  A127250 A127251 A127252 * A127254 A127255 A127256

KEYWORD

sign,tabl

AUTHOR

Paul Barry, Jan 10 2007

STATUS

approved

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Last modified February 19 16:02 EST 2019. Contains 320311 sequences. (Running on oeis4.)