%I #12 Sep 17 2016 11:53:45
%S 0,2,-1,-2,0,2,-6,4,-6,6,4,2,6,10,6,-6,-12,2,-2,12,2,-8,-6,-6,2,6,-14,
%T 6,2,-6,-2,0,18,4,-6,-20,-22,10,-18,-6,12,-10,12,26,18,-8,16,10,6,14,
%U -6,24,14,0,-6,18,18,-20,26,6
%N P-defects p - N(p) of the congruence y^2 == x^3 - x^2 + 4*x - 4 (mod p) for primes p, where N(p) is the number of solutions given for p = prime(n) by A276664(n).
%H Seiichi Manyama, <a href="/A276695/b276695.txt">Table of n, a(n) for n = 1..10000</a>
%F a(n) = prime(n) - A276664(n), n >= 1, where A276664(n) is the number of solutions to the congruence y^2 == x^3 - x^2 + 4*x - 4 (mod prime(n)).
%F If prime(n) == 1 (mod 4), a(n) = A273163(n). If prime(n) == 3 (mod 4), a(n) = -A273163(n).
%Y Cf. A273163, A276664.
%K sign
%O 1,2
%A _Seiichi Manyama_, Sep 14 2016