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 A127809 #6 Oct 11 2017 17:52:15
%S A127809 2,2,3,2,2,3,2,5,2,3,2,6,3,5,2,2,2,2,7,5,3,2,3,5,2,5,2,6,3,3,2,3,2,2,
%T A127809 6,5,2,5,2,2,2,19,5,2,3,2,3,2,6,3,7,7,6,3,5,2,6,5,3,3,2,5,17,10,2,3,
%U A127809 10,2,2,3,7,6,2,2,5,2,5,3,21,2,2,7,5,15,2,3,13,2,3,2,13,3,2,7,5,2,3,2,2
%N A127809 Least positive primitive root of (n-th prime)^4.
%t A127809 << NumberTheory`NumberTheoryFunctions` Table[PrimitiveRoot[(Prime[n])^4], {n, 2, 100}]
%t A127809 Table[PrimitiveRoot[Prime[n]^4],{n,2,100}] (* Primitive Root is now part of the core functions in Mathematica *) (* _Harvey P. Dale_, Oct 11 2017 *)
%Y A127809 Cf. A001918, A127807, A127808, A127810.
%K A127809 nonn
%O A127809 2,1
%A A127809 _Artur Jasinski_, Jan 29 2007