%I A124661
%S A124661 5,7,13,19,23,31,43,47,73,83,109,113
%N A124661 Primes which have only nonnegative amplitudes defined as ((Prime[k + 
               n] + Prime[k - n])/2) - Prime[k] for k=3,4,5,..., n=1,2,..,k-3,k-2.
%e A124661 31 belonging because all amplitudes are nonnegative {2, 1, 0, 1, 2, 4, 
               3, 5,
%e A124661 6} 29 don't belonging because some amplitudes are negative {-2, -1, 0, 
               -1, 0, 1, 3, 3}
%Y A124661 Sequence in context: A109269 A114275 A156107 this_sequence A084932 A038908 
               A163427
%Y A124661 Adjacent sequences: A124658 A124659 A124660 this_sequence A124662 A124663 
               A124664
%K A124661 nonn,uned
%O A124661 1,1
%A A124661 Artur Jasinski (grafix(AT)csl.pl), Dec 23 2006