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 A164061 #2 Mar 31 2012 10:22:38 %S A164061 2,3,5,19,139,149,311,6827,7949,27743,29663,29759,31249,101281,124213, %T A164061 130729,135271,169691,177019,361967,508009,568439,815351 %N A164061 Prime p1 of the form a^b - c^d = p1, where a, b, c, d are primes and a + b + c + d = p2, where p2 (A164062) is also prime. %e A164061 3^3 - 5^2 = 2, 3 + 3 + 5 + 2 = 13; 2^7 - 5^3 = 3, 2 + 7 + 5 + 3 = 17; 2^5 - 3^3 = 5, 2 + 5 + 3 + 3 = 13; 3^3 - 2^3 = 19, 3 + 3 + 2 + 3 = 11; %K A164061 nonn %O A164061 1,1 %A A164061 _Oleg Zyakun_, Aug 12 2009