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 A144725 #6 Jun 02 2025 00:36:02 %S A144725 5,13,61,421,3361,30241,332641,3991681,55883521,950019841,19000396801, %T A144725 456009523201,13680285696001,465129713664001,20465707401216001, %U A144725 1473530932887552001,125250129295441920001 %N A144725 Primes arising in A144724. %C A144725 Is this A144718 without the 3? - _R. J. Mathar_, Jul 24 2023 %Y A144725 A046966, A046972, A144717, A144718, A144722, A144723, A144724, A144725, A144726, A144727, A144728, A144729, A144730, A144731 %K A144725 nonn %O A144725 1,1 %A A144725 _Artur Jasinski_, Sep 19 2008; corrected Sep 19 2008