A276193 - OEIS

%I #22 Sep 16 2016 07:28:42

%S -1,-2,0,1,0,-4,6,2,0,-6,-4,2,6,8,-12,6,-6,8,-4,0,2,8,-6,-6,-10,0,-4,

%T 12,2,6,-16,18,18,14,-18,8,-4,-16,-12,-12,-12,20,24,14,-18,20,-4,8,18,

%U -4,-6,24,-10,-18,18,0,-12,-16,-10,-6,-22,24,2,-24,-10,6,8,14,-24,-28,18,-24,8,14,-16,36,18,20,-18,14,6,-10,24,-34,8,-12,18,-10,12,32,-6,-36,-16,-12,-4,0

%N P-defects p - N(p) of the congruence y^2 + x*y + y == x^3 + 4*x - 6 (mod p) for primes p, where N(p) is the number of solutions given for p = prime(n) by A276173(n).

%H Seiichi Manyama, <a href="/A276193/b276193.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) = prime(n) - A276173(n), n >= 1, where A276173(n) is the number of solutions to the congruence y^2 + x*y + y == x^3 + 4*x - 6 (mod prime(n)).

%Y Cf. A276173.

%K sign

%O 1,2

%A _Seiichi Manyama_, Sep 10 2016