A097540 Sum_{k=1..2*n-1} J(n,k)*k where J(i,j) is the Jacobi symbol.

1, -2, -2, 16, 0, -12, 6, 0, 108, -28, -46, 0, 0, -40, 20, 256, 0, -8, -118, 0, 0, -92, 50, 0, 1000, -100, 14, 0, 0, -136, 74, 0, 0, -184, -300, 864, 0, -164, 128, 0, 0, -216, -126, 0, 0, -296, 406, 0, 4116, -12, -508, 0, 0, -12, 448, 0, 0, -396, -794, 0, 0, -336, 268, 4096, 0, -448, 74, 0, 0, -536, 346, 0

Offset

1,2

Links

Table of n, a(n) for n=1..72.

Crossrefs

Cf. A097541.

Sequence in context: A264838 A184718 A079897 * A345225 A112327 A152541

Adjacent sequences: A097537 A097538 A097539 * A097541 A097542 A097543

Keyword

sign

Author

N. J. A. Sloane, Aug 27 2004

Status

approved