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 A175737 #8 May 13 2013 01:54:11 %S A175737 561,1105,4033,5461,6601,7957,12801,18705,23001,29341,39865,72885, %T A175737 80581,101101,149281,314821,387731,710533,976873,1246785,2077545, %U A175737 2603381,3316951,6474691,7177105,12261061,19985269,24726773,35428141,50155733,51030601 %N A175737 Increasing gaps between 2-pseudoprimes (upper end). %C A175737 A175738 is the main entry for this sequence. %H A175737 Charles R Greathouse IV, <a href="/A175737/b175737.txt">Table of n, a(n) for n = 1..207</a> %H A175737 <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a> %Y A175737 Cf. A175736 (lower end). %K A175737 nonn %O A175737 1,1 %A A175737 _Charles R Greathouse IV_, Aug 28 2010