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 A126559 #7 Mar 28 2020 04:28:23 %S A126559 4,29,734,199532,7972305,731908877 %N A126559 Least interprime of n-th order. %e A126559 A024675(1) = 4, A126554(1) = 29, A126556(1) = 734, A126558(1) = 199532. %Y A126559 Cf. A006562 (balanced primes), A024675 (interprimes), A126554 (interprimes of second order), A126556 (interprimes of third order), A126558 (interprimes of fourth order). %K A126559 nonn %O A126559 1,1 %A A126559 _Artur Jasinski_, Dec 27 2006 %E A126559 Edited by _Klaus Brockhaus_, Jan 11 2007 %E A126559 a(5)-a(6) from _Amiram Eldar_, Mar 28 2020