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A166085 Number of times Sum_{i=1..u} J(i,4n+1) obtains value zero when u ranges from 1 to (4n+1). Here J(i,k) is the Jacobi symbol. 3
0, 2, 0, 4, 4, 6, 0, 8, 4, 8, 8, 20, 0, 14, 6, 10, 8, 14, 8, 20, 0, 10, 14, 20, 8, 24, 12, 12, 14, 38, 0, 74, 10, 18, 12, 22, 10, 22, 38, 22, 14, 18, 0, 30, 8, 20, 24, 62, 8, 36, 14, 14, 20, 36, 12, 26, 0, 18, 18, 28, 14, 118, 16, 22, 26, 68, 12, 42, 10, 24, 18, 34, 0, 36, 44 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

All terms are even.

LINKS

A. Karttunen, Table of n, a(n) for n = 0..65536

CROSSREFS

a(n) = A166040(A005843(n)). Bisection of A166040.

Sequence in context: A316987 A228885 A323910 * A129760 A291330 A057377

Adjacent sequences:  A166082 A166083 A166084 * A166086 A166087 A166088

KEYWORD

nonn

AUTHOR

Antti Karttunen, Oct 08 2009

STATUS

approved

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Last modified February 17 19:35 EST 2019. Contains 320222 sequences. (Running on oeis4.)