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 A140840 #8 Jan 14 2014 08:07:27 %S A140840 11,431,641,1061,1481,1901,2111,2531,2741,3371,3581,4001,4211,4421, %T A140840 5051,5261,5471,6101,6311,6521,7151,8831,9041,9461,10091,10301,11351, %U A140840 11981,12401,12611,12821,13241,13451,14081,15131,15551,15761,15971,16811,17021 %N A140840 Primes of the form 210n+11. %F A140840 a(n) = 210*A076355(n) + 11. - _Zak Seidov_, Jan 14 2014 %t A140840 Select[210 Range[0, 100] + 11, PrimeQ@ # &] %t A140840 Select[Range[11,10^4,210],PrimeQ] (* _Zak Seidov_, Jan 14 2014 *) %Y A140840 Cf. A073102, A076355. %K A140840 nonn %O A140840 1,1 %A A140840 _Juri-Stepan Gerasimov_, Jul 04 2008 %E A140840 I changed the Mathematica coding and extended the sequence. - _Robert G. Wilson v_, Sep 22 2008