This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A214788 #8 Aug 06 2012 15:12:42 %S A214788 7,8,17,23,37,53,67,73,83,97,127,157,163,167,173,197,223,227,257,277, %T A214788 293,313,317,337,367,373,383,433,443,457,463,467,487,523,577,593,607, %U A214788 613,617,643,647,653,673,683,727,733 %N A214788 Numbers n such that n-3=A214787(n). %C A214788 Except for 8, these are all primes. This is still a conjecture. %Y A214788 Cf. A214781, A214787 %K A214788 nonn %O A214788 1,1 %A A214788 _Art DuPre_, Aug 03 2012