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A095269 Diving index of 4n+3. 5


%S 0,0,0,0,3,0,0,0,0,0,3,0,10,0,0,0,3,0,0,0,0,0,3,0,10,0,7,0,3,0,7,7,0,

%T 0,3,0,8,0,8,0,3,0,0,0,11,0,3,0,34,0,8,19,3,0,10,13,61,0,3,0,0,7,0,0,

%U 3,0,7,0,8,0,3,0,10,0,0,0,3,0,32,0,7,0,3,0,58,0,7,0,3,0,0

%N Diving index of 4n+3.

%C Diving index of an odd number n is the first integer u > 1 where Sum_{i=1..u} J(i/n) results -1 and zero if never. Here J(i/n) is Jacobi symbol of i and n, which reduces to a Legendre symbol L(i/n) when n is a prime.

%H A. Karttunen and J. Moyer, <a href="/A095062/a095062.c.txt">C-program for computing the initial terms of this sequence</a>

%Y a(n)=A095270(n)+1 modulo A004767(n). Cf. A095109, A095271 (same sequence with zeros removed).

%K nonn

%O 0,5

%A _Antti Karttunen_ and Jun 01 2004

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Last modified May 26 03:55 EDT 2022. Contains 354074 sequences. (Running on oeis4.)