%I #10 Dec 05 2019 20:36:26
%S 2,2,2,0,0,0,5,5,5,0,0,0,11,11,11,0,0,0
%N r values of Triphosian primes.
%C All values will be either 0, 2, or in A007528.
%D Keely Grossnickle, Brian Hollenbeck, Jeana Johnson & Zhihao Sun, Triphos: A World Without Subtraction, Mathematics Magazine, 92:4 (2019), 272-285.
%Y Cf. A307692, A307694.
%K nonn
%O 1,1
%A _Benjamin Knight_, Nov 28 2019