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 A069455 #4 Mar 31 2012 14:39:52 %S A069455 31,43,61,73,229,241,271,283,313,349,463,523,571,601,619,643,661,859, %T A069455 883,1093,1153,1231,1279,1291,1303,1321,1429,1453,1609,1621,1669,1699, %U A069455 1723,1789,1999,2029,2143,2239,2269,2311,2341,2383 %N A069455 Greater of lonely twin primes. %e A069455 The first lonely twin primes (A069453) are 29,31 (23 and 37 are non-twin), 41,43 (37 and 47 are non-twin), 59,61 (53 and 67 are non-twin). Of these, the greater twins are 31,43,61, so this is how the sequence begins. %Y A069455 Cf. A069453, A035789. %K A069455 nonn %O A069455 1,1 %A A069455 _Neil Fernandez_, Mar 22 2002