A110244 Diagonal sums of a Jacobi number triangle.

1, 1, 0, -2, 1, 2, 2, -2, 1, -1, 2, -3, 1, 6, 0, -4, 1, -1, 5, -2, 1, -3, 2, -1, 1, 11, 5, -4, 1, -1, 8, -4, 1, -3, 2, -5, 1, -1, 1, -5, 1, 14, 8, -3, 1, -5, 5, -3, 1, -1, -1, -8, 1, -3, 8, -4, 1, -3, 5, -3, 1, 28, 5, -2, 1, -5, 14, -3, 1, -3, 8, -5, 1, -3, -1, -8, 1, 1, 11

Offset

0,4

Comments

Diagonal sums of number triangle A110242.

Links

Table of n, a(n) for n=0..78.

Formula

a(n)=sum{k=0..floor(n/2), Jacobi(n-k, 2n-4k+1)}

Crossrefs

Sequence in context: A082055 A073812 A009223 * A309020 A278495 A254623

Adjacent sequences: A110241 A110242 A110243 * A110245 A110246 A110247

Keyword

easy,sign

Author

Paul Barry, Jul 17 2005

Status

approved