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A117446 Number triangle C(L(k/3),n-k) where L(j/p) is the Legendre symbol of j and p. 3
1, 0, 1, 0, 1, 1, 0, 0, -1, 1, 0, 0, 1, 0, 1, 0, 0, -1, 0, 1, 1, 0, 0, 1, 0, 0, -1, 1, 0, 0, -1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, -1, 0, 1, 1, 0, 0, -1, 0, 0, 1, 0, 0, -1, 1, 0, 0, 1, 0, 0, -1, 0, 0, 1, 0, 1, 0, 0, -1, 0, 0, 1, 0, 0, -1, 0, 1, 1, 0, 0, 1, 0, 0, -1, 0, 0, 1, 0, 0, -1, 1, 0, 0, -1, 0, 0, 1, 0, 0, -1, 0, 0, 1, 0, 1, 0, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Row sums are A117447. Diagonal sums are A117448. Inverse is A117449.

LINKS

Table of n, a(n) for n=0..107.

EXAMPLE

Triangle begins

1,

0, 1,

0, 1, 1,

0, 0, -1, 1,

0, 0, 1, 0, 1,

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

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

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A167371 A127241 A087748 * A187034 A101688 A155029

Adjacent sequences:  A117443 A117444 A117445 * A117447 A117448 A117449

KEYWORD

easy,sign,tabl

AUTHOR

Paul Barry, Mar 16 2006

STATUS

approved

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Last modified April 17 05:36 EDT 2021. Contains 343059 sequences. (Running on oeis4.)