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 A224862 #14 Jul 23 2013 20:53:41 %S A224862 0,4,5,9,11,12,20,23,28,39,40,42,49,54,55,62,63,72,103,104,114,133, %T A224862 154,161,173,174,181,182,184,187,202,205,215,221,224,230,238,249,250, %U A224862 257,258,261,263,264,270,291,296,298,308,338,342,345,348,361,364,389,394 %N A224862 Numbers n such that 90*n + 71 and 90*n + 73 are twin primes. %F A224862 A202129 INTERSECTS A195993. %t A224862 Select[Range[0, 499], PrimeQ[90# + 71] && PrimeQ[90# + 73] &] (* copied from: _Alonso del Arte_, Jul 22 2013 *) %Y A224862 Cf. A202129, A195993. %K A224862 nonn %O A224862 1,2 %A A224862 _J. W. Helkenberg_, Jul 22 2013