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 A031937 #14 Aug 11 2014 22:45:16 %S A031937 541,1087,1277,1399,1777,1931,2179,2521,2879,3821,3907,4177,4391,4441, %T A031937 4481,4621,4721,4751,5077,5227,5501,6029,6247,6469,6547,6599,6637, %U A031937 7177,7369,7411,7451,7477,7639,7901,8209,8779,9127,9311,9767 %N A031937 Upper prime of a difference of 18 between consecutive primes. %H A031937 Harvey P. Dale, <a href="/A031937/b031937.txt">Table of n, a(n) for n = 0..1000</a> %H A031937 <a href="/index/Pri#gaps">Index entries for primes, gaps between</a> %F A031937 a(n) = A031936(n)+18. %t A031937 Transpose[Select[Partition[Prime[Range[1300]],2,1],Last[#]-First[#] == 18&]][[2]] (* _Harvey P. Dale_, Oct 06 2011 *) %Y A031937 Cf. A031935. %K A031937 nonn %O A031937 0,1 %A A031937 _Jeff Burch_