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 A119964 #6 Feb 16 2025 08:33:01
%S A119964 1,5,19,779,84911,2632241,713337311,1163866139,587752400195,
%T A119964 476667196558145,2856927907113011,345688276760674331,
%U A119964 13819099649042566549,4988694973304366524189,10780569837310736058772429
%N A119964 Numerator of the n-th Artin product.
%C A119964 Artin's constant (A005596) is equal to Product[1-1/(Prime[k]*(Prime[k]-1)),{k,1,Infinity}]. n-th Artin product is Product[1-1/(Prime[k]*(Prime[k]-1)),{k,1,n}].
%H A119964 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ArtinsConstant.html">Artin's Constant</a>.
%F A119964 a(n) = Numerator[ Product[ 1 - 1/(Prime[k]*(Prime[k]-1)), {k,1,n}]].
%t A119964 Table[Numerator[Product[1-1/(Prime[k]*(Prime[k]-1)),{k,1,n}]],{n,1,20}]
%Y A119964 Cf. A119534, A091568, A091567, A005596, A048296.
%K A119964 frac,nonn
%O A119964 1,2
%A A119964 _Alexander Adamchuk_, Aug 03 2006