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 A167596 #4 Mar 30 2012 18:52:35 %S A167596 0,3,3,4,3,4,4,4,3,3,4,4,3,5,4,4,3,6,5,6,6,6,5,6,6,6,6,6,5,6,5,5,4,4, %T A167596 3,3,2,2,1,3,2,2,1,2,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, %U A167596 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 %N A167596 The number of isolated nonprimes between the nonisolated prime and the isolated prime. %e A167596 a(1)=0 (3>no>2); a(2)=3 (5<6&12&18<23); a(3)=3 (7<12718&30<37); a(4)=4 (11<12&18&30&42<47); a(5)=3 (13<18&30&42<53); a(6)=4 (17<18&30&42&60<67). %Y A167596 Cf. A001097 (the nonisolated primes), A007510 (the isolated primes), A014574 (the isolated nonprimes), A167511. %K A167596 nonn %O A167596 1,2 %A A167596 _Juri-Stepan Gerasimov_, Nov 06 2009 %E A167596 All numbers from a(49) onwards corrected and sequence extended beyond a(59) by _R. J. Mathar_, May 30 2010