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 A016844 #10 Jul 08 2025 05:56:28
%S A016844 6561,5764801,214358881,2562890625,16983563041,78310985281,
%T A016844 282429536481,852891037441,2251875390625,5352009260481,11688200277601,
%U A016844 23811286661761,45767944570401,83733937890625
%N A016844 (4n+3)^8.
%H A016844 <a href="/index/Rec#order_09">Index entries for linear recurrences with constant coefficients</a>, signature (9, -36, 84, -126, 126, -84, 36, -9, 1).
%t A016844 (4*Range[0,20]+3)^8 (* or *) LinearRecurrence[{9,-36,84,-126,126,-84,36,-9,1},{6561,5764801,214358881,2562890625,16983563041,78310985281,282429536481,852891037441,2251875390625},20] (* _Harvey P. Dale_, Sep 17 2022 *)
%K A016844 nonn,easy
%O A016844 0,1
%A A016844 _N. J. A. Sloane_