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 A167691 #4 Mar 30 2012 18:52:35 %S A167691 9,10,6,5,10,8,3,5,7,9,13,3,19,5,3,5,28,11,6,14,5,5,10,12,13,6,13,5, %T A167691 12,5,7,5,5,3,5,7,3,7,23,3,5,7,6,11,7,3,7,3,5,28,5,9,5,10,9,5,10,5,14, %U A167691 12,5,16,3,5,7,9,7,9,7,5,5,3,7,5,3,7,3,13,9,32,13,6,13,6,19,3,7,9,7,3,5,5,13 %N A167691 The number of nonisolated nonprimes between n-th isolated prime and (n+1)-th isolated prime. %Y A167691 Cf. A007510 (the isolated primes), A164276 (the nonisolated nonprimes). %K A167691 nonn %O A167691 1,1 %A A167691 _Juri-Stepan Gerasimov_, Nov 09 2009 %E A167691 Corrected (27 replaced by 28) by _R. J. Mathar_, May 30 2010