%I #5 Dec 15 2017 17:36:08
%S 1,2,20,26,351,425,696
%N Initial n digits in decimal portion of the Traveling Salesman constant (A073008) form a prime number.
%C a(5), a(6) and a(7) certified prime with Primo.
%e a(2)=2 since 71 is prime.
%Y Cf. A073008.
%K more,nonn,base
%O 1,2
%A _Jason Earls_, Dec 31 2002