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 A016836 #12 Apr 21 2023 05:47:07
%S A016836 4096,2176782336,1000000000000,56693912375296,1156831381426176,
%T A016836 12855002631049216,95428956661682176,531441000000000000,
%U A016836 2386420683693101056,9065737908494995456,30129469486639681536,89762301673555234816,244140625000000000000,614787626176508399616
%N A016836 a(n) = (4n+2)^12.
%H A016836 <a href="/index/Rec#order_13">Index entries for linear recurrences with constant coefficients</a>, signature (13,-78,286,-715,1287,-1716,1716,-1287,715,-286,78,-13,1).
%F A016836 From _Amiram Eldar_, Apr 21 2023: (Start)
%F A016836 a(n) = A016825(n)^12.
%F A016836 a(n) = 2^12*A016764(n).
%F A016836 Sum_{n>=0} 1/a(n) = 691*Pi^12/2615987404800. (End)
%t A016836 Table[(4*n+2)^12, {n, 0, 20}] (* _Amiram Eldar_, Apr 21 2023 *)
%Y A016836 Cf. A016764, A016825.
%K A016836 nonn,easy
%O A016836 0,1
%A A016836 _N. J. A. Sloane_