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 A214784 #12 Jun 02 2025 08:05:38 %S A214784 11,19,31,71,79,179,191,239,251,311,379,419,431,439,479,491,499,571, %T A214784 631,659,719,739,751,839,971,1019,1039,1051,1171,1259,1319,1451,1459, %U A214784 1499,1531,1571,1759,1811,1831,1879,1979 %N A214784 Numbers n such that n-4=A214783(n). %C A214784 Conjecture: this sequence is the set of n in A214783(n) for which n-4=A214783(n) are all primes. %Y A214784 Cf. A214783 %K A214784 nonn %O A214784 1,1 %A A214784 _Art DuPre_, Aug 03 2012