%I
%S 19,13,19,13,2,3,13,19,13,3,13,7,5,3,13,7,5,13,13,7,5,5,13,13,7,5,13,
%T 13,7,5,5,13,13,7,5,13,7,7,5,13,7,17,11,11,7,7,17,11,13,7,17,11,11,7,
%U 7,17,11,13,7,11,11,7,7,11,13,7,17,11,11,7,7,17,11,13,7,17,11,11,7,7,17,11
%N Smallest prime p_k such that n can be written as a "plusminus" sum n=sum_(i=1..k)e_i*(p_i)^2 with distinct primes p_i<=p_k, where e_i is 1 or 1.
%C The first terms where this sequence differs from A088934 are n=22,31,52,87,89,98,118,127,...
%e a(22)=13 because 22 can be represented as 13^2+11^2+7^2+5^22^2.
%e The corresponding representation with the minimum number of terms is
%e 22=19^213^211^27^2 (A088934(22)=19, A088910(22)=4 terms)
%Y The positions of the records in this sequence are given in A089295. Cf. A088910, A088934.
%K nonn
%O 0,1
%A _W. Edwin Clark_ Nov 06 2003
