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 A334481 #19 Aug 25 2021 12:59:54
%S A334481 1,0,3,3,5,3,7,8,8,8,4,6,1,3,5,2,8,4,3,0,8,2,8,4,6,1,8,4,9,7,6,2,1,8,
%T A334481 3,3,9,4,7,5,1,7,6,7,7,4,8,1,4,9,1,6,3,0,1,2,3,2,4,8,9,2,5,1,0,3,2,7,
%U A334481 7,7,7,4,2,3,9,4,0,7,0,3,6,1,5,8,7,5,3,2,0,5,9,1,7,2,4,0,8,1,4,0,1,1,7,3,9
%N A334481 Decimal expansion of Product_{k>=1} (1 + 1/A002476(k)^2).
%C A334481 Product_{k>=1} (1 - 1/A002476(k)^2) = 1/A175646 = 0.9671040753637981066150556834173635260473412207450...
%C A334481 Let Zeta_{6,1}(4) = 1/ Product_{k>=1}(1-1/A002476(k)^4) = 1.0004615089.. and Zeta_{6,1}(2)= A175646 as tabulated in arXiv:1008.2547. Then this constant equals Zeta_{6,1}(2)/Zeta_{6,1}(4). - _R. J. Mathar_, Jan 12 2021
%H A334481 R. J. Mathar, <a href="https://arxiv.org/abs/1008.2547">Table of Dirichlet L-series and prime zeta modulo functions for small moduli</a>, arXiv:1008.2547 [math.NT], 2010-2015, Zeta_{6,1}(4) and Zeta_{6,1}(2) in Section 3.2.
%F A334481 A334481 * A334482 = 54/(5*Pi^2).
%e A334481 1.03353788846135284308284618497621833947517677481...
%Y A334481 Cf. A002476, A175646, A334477, A334482.
%K A334481 nonn,cons
%O A334481 1,3
%A A334481 _Vaclav Kotesovec_, May 02 2020
%E A334481 More digits from _Vaclav Kotesovec_, Jun 27 2020