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A127244 A Thue-Morse signed falling factorial triangle. 4
1, -1, 1, 1, -1, 1, 0, 0, 0, 1, 0, 0, 0, -1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, 0, 0, 0, 1, -1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Inverse of A127243. Row sums are A127245.

LINKS

Table of n, a(n) for n=0..65.

FORMULA

Number triangle T(n,k)=(-1)^(n-k)*Product{j=0..n-k-1,A010060(n-j)}*[k<=n]

EXAMPLE

Triangle begins

.1,

.-1, 1,

.1, -1, 1,

.0, 0, 0, 1,

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

.0, 0, 0, 0, 0, 1,

.0, 0, 0, 0, 0, 0, 1,

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

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

.0, 0, 0, 0, 0, 0, 0, 0, 0, 1,

.0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1

CROSSREFS

Sequence in context: A127507 A204441 A127247 * A144778 A143142 A174856

Adjacent sequences:  A127241 A127242 A127243 * A127245 A127246 A127247

KEYWORD

easy,tabl,sign

AUTHOR

Paul Barry, Jan 10 2007

STATUS

approved

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Last modified November 27 04:21 EST 2020. Contains 338677 sequences. (Running on oeis4.)