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 A351864 #23 Jun 02 2022 08:31:31
%S A351864 1,1,4,2,4,1,4,4,4,4,16,2,4,2,8,8,4,4,16,8,16,1,4,4,4,4,16,4,8,4,16,
%T A351864 16,4,4,16,8,16,4,16,16,16,16,64,2,4,2,8,8,4,4,16,8,16,2,8,8,8,8,32,8,
%U A351864 16,8,32,32,4,4,16,8,16,4,16
%N A351864 Numerator of zeta({6}_n)/Pi^(6n).
%C A351864 ({6}_n) is standard notation for multiple zeta values. It represents (6, ..., 6) where the multiplicity of 6 is n.
%H A351864 J. M. Borwein, D. M. Bradley, and D. J. Broadhurst, <a href="https://arxiv.org/abs/hep-th/9611004">Evaluations of k-fold Euler/Zagier sums: a compendium of results for arbitrary k</a>, arXiv:hep-th/9611004, 1996.
%H A351864 Roudy El Haddad, <a href="https://arxiv.org/abs/2102.00821">Multiple Sums and Partition Identities</a>, arXiv:2102.00821 [math.CO], 2021.
%H A351864 Roudy El Haddad, <a href="https://doi.org/10.7546/nntdm.2022.28.2.200-233">A generalization of multiple zeta value. Part 2: Multiple sums</a>. Notes on Number Theory and Discrete Mathematics, 28(2), 2022, 200-233, DOI: 10.7546/nntdm.2022.28.2.200-233.
%F A351864 a(n) = numerator(6*2^(6*n)/(6*n + 3)!).
%F A351864 a(n) = 2^(A000120(3*n + 1) - 1).
%F A351864 a(n) = 2^A240883(n).
%t A351864 a[n_] := Numerator[6*2^(6*n)/(6*n + 3)!]; Array[a, 71, 0]
%o A351864 (PARI) a(n) = 1 << (hammingweight(3*n+1) - 1);
%Y A351864 Cf. A351806 (denominators).
%Y A351864 Cf. A000120, A240883, A046988, A013664, A103345.
%K A351864 nonn,easy,frac
%O A351864 0,3
%A A351864 _Roudy El Haddad_, Feb 22 2022