A214788 - OEIS

%I #8 Aug 06 2012 15:12:42

%S 7,8,17,23,37,53,67,73,83,97,127,157,163,167,173,197,223,227,257,277,

%T 293,313,317,337,367,373,383,433,443,457,463,467,487,523,577,593,607,

%U 613,617,643,647,653,673,683,727,733

%N Numbers n such that n-3=A214787(n).

%C Except for 8, these are all primes. This is still a conjecture.

%Y Cf. A214781, A214787

%K nonn

%O 1,1

%A _Art DuPre_, Aug 03 2012