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 A266584 #20 Aug 07 2019 03:29:51 %S A266584 1,2,15,3,2136,4,788244,7,73780392,6,57067140928,1361665032086, %T A266584 19953429852608,290660101635794,74896929428416952,24660071077535201, %U A266584 5620182896687887031 %N A266584 Smallest m such that prime(m) starts a (nonsingular) symmetric n-tuplet of consecutive primes of the smallest span (=A266511(n)). %C A266584 See A266583 for further comments and the relation to A266585. %C A266584 A000040(a(n)+n-1) - A000040(a(n)) = A266511(n). %F A266584 a(n) = A000720(A266512(n)). %Y A266584 Cf. A055380, A065688, A175309, A266511, A266512, A261323, A261324, A266583, A266585. %K A266584 nonn,more %O A266584 1,2 %A A266584 _Max Alekseyev_, Jan 01 2016 %E A266584 More terms from _Max Alekseyev_, Jul 24 2019