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 A126989 #12 Oct 21 2017 21:02:39 %S A126989 0,1,2,6,30,30,210 %N A126989 Gaps associated with the first and smallest arithmetic progressions of n consecutive primes in A006560. %C A126989 The gap for the first and smallest AP of 7 consecutive primes is at least 210 (so the 7th term is not definitive). %D A126989 P. Ribenboim, The Little Book of Bigger Primes, Springer-Verlag NY 2004. %H A126989 H. Dubner et al., <a href="http://www.ams.org/mcom/2002-71-239/S0025-5718-01-01374-6/home.html">Ten consecutive primes in arithmetic progression</a>, Mathematics of Computation, Volume 71, Number 239, Pages 1323-1328. %Y A126989 Cf. A006560, A005115, A093364. %K A126989 nonn,hard,more %O A126989 1,3 %A A126989 _Artur Jasinski_, Jan 01 2007 %E A126989 a(7) corrected by _Stephen Tucker_, Jan 25 2009