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 A051110 #11 Jan 12 2020 10:46:57 %S A051110 113,293,317,523,773,839,863,887,953,1069,1129,1259,1327,1381,1409, %T A051110 1583,1637,1669,1759,1831,1847,1913,1933,1951,2039,2113,2161,2179, %U A051110 2221,2251,2311,2357,2423,2477,2503,2557,2593,2633,2753,2803,2819,2861,2939,2971,3023 %N A051110 Duplicate of A124586. %o A051110 (PARI) isok(n) = isprime(n) && (fn = ((n-1)! + 1)) && ((fn % (n+2)) == 1) && ((fn % (n+4)) == 1) && ((fn % (n+6)) == 1) && ((fn % (n+8)) == 1) && ((fn % (n+10)) == 1) && ((fn % (n+12)) == 1); \\ _Michel Marcus_, Dec 31 2013 %K A051110 dead %O A051110 1,1 %A A051110 _Labos Elemer_ %E A051110 More terms from _Michel Marcus_, Dec 31 2013