A110247 A Jacobi number triangle.

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

Offset

0,1

Comments

Row sums are A110248. Diagonal sums are A110249. Inverse is A110250.

Links

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

Formula

Number triangle T(n, k)=if(k<=n, Jacobi(k, 2n-2k+1), 0)

Example

Rows begin
1;
0,1;
0,1,1;
0,1,-1,1;
0,1,-1,0,1;
0,1,1,-1,1,1;
0,1,1,-1,1,-1,1;

Crossrefs

Cf. A110242.

Sequence in context: A111967 A177978 A213061 * A114607 A123110 A004593

Adjacent sequences: A110244 A110245 A110246 * A110248 A110249 A110250

Keyword

easy,sign,tabl

Author

Paul Barry, Jul 17 2005

Status

approved