A394455 a(n) = N(1,p)-N(-1,p)-N(0,p) where p is the n-th odd prime and N(j,p) is the number of i with 0<=i<A106291(p) for which the Legendre symbol (A000032(i)/p)=j.

-2, 0, -2, -2, 0, 4, -2, -2, -2, -2, 0, -12, -2, -2, 0, -2, 0, -2, -2, -12, -2, -2, 12, 36, -2, -2, -2, 0, 12, -2, -2, -44, 4, 0, 0, 0, -2, -2, 0, -2, -2, -2, -28, 0, 6, -10, -2, -2, -2, 20, -2, 28, -2, 4, -2, 0, -2, 0, -4, -2, 0, -2, -2, 52, 0, -12, 36, -2

Offset

1,1

Links

Jason D. Andoyo, Table of n, a(n) for n = 1..9591

Crossrefs

Cf. A000032, A106291, A395264, A065091, A395295 (Fibonacci case).

Sequence in context: A369279 A138021 A166065 * A252706 A139137 A138231

Adjacent sequences: A394452 A394453 A394454 * A394456 A394457 A394458

Keyword

sign

Author

Jason D. Andoyo, May 01 2026

Status

approved