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%I #4 Dec 05 2013 19:55:48
%S 2,3,7,17,31,1321
%N Primes (k) such that prime(k)*prime(k+1) + 1 or prime(k)*prime(k+1)- 1 is divisible by prime(k+2).
%C a(7) > 1e8.
%e 7 is a member as 13 divides 7*11 + 1 = 78. 17 is a member as 23 divides 17*19 -1 = 322.
%K nonn
%O 0,1
%A _Amarnath Murthy_, Oct 26 2002
%E One more term from _Ralf Stephan_, Oct 31 2002