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 A214791 #15 Nov 26 2014 09:22:44 %S A214791 17,23,26,37,53,67,83,137,157,163,167,173,193,197,223,283,293,367,373, %T A214791 383,467,487,523,547,577,613,643,673,683,727,787,853,863,887,907,937, %U A214791 1033,1063,1093 %N A214791 Numbers n such that n+8 = A214789(n). %C A214791 This sequence is disjoint from A214790. It is only a conjecture that this sequence consists of primes except for 26. %H A214791 Charles R Greathouse IV, <a href="/A214791/b214791.txt">Table of n, a(n) for n = 1..4000</a> %o A214791 (PARI) is(n)=my(k); while(((Mod([1, 1; 1, 0], n))^k++)[1, 2]!=-8, ); k==n+7 \\ _Charles R Greathouse IV_, Nov 25 2014 %Y A214791 Cf. A214789, A214790, A214792 %K A214791 nonn %O A214791 1,1 %A A214791 _Art DuPre_, Aug 03 2012