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 A140791 #11 Apr 09 2013 11:08:11 %S A140791 139,887,4297,19333,31907,43331,173359,542603,404851,396733,1468277, %T A140791 1895359,5518687,7621259,13626257,33803689,27915737,17051707, %U A140791 142414669,378043979,20831323,47326693,607010093,391995431,387096133,944192807 %N A140791 First occurrence of prime gap 10*n. %D A140791 J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 139, pp 47, Ellipses, Paris 2008. %H A140791 <a href="/index/Pri#gaps">Index entries for primes, gaps between</a>. %F A140791 a(n)=A000230(5n), a(3n) = A224522(n) = A058193(5n). - _M. F. Hasler_, Apr 09 2013 %Y A140791 Cf. A101232, A062529, A000230. %K A140791 nonn %O A140791 1,1 %A A140791 _Lekraj Beedassy_, Jul 14 2008 %E A140791 Offset corrected by _Arkadiusz Wesolowski_, Jun 07 2011