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 A109595 #12 Mar 02 2018 20:49:40
%S A109595 1,1,1,8,4,2,27,9,3,64,16,4,125,25,5,216,36,6,343,49,7,512,64,8,729,
%T A109595 81,9,1000,100,10,1331,121,11,1728,144,12,2197,169,13,2744,196,14,
%U A109595 3375,225,15,4096,256,16,4913,289,17,5832,324,18,6859,361,19,8000,400,20
%N A109595 n^3 followed by n^2 followed by n.
%H A109595 <a href="/index/Rec#order_12">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 4, 0, 0, -6, 0, 0, 4, 0, 0, -1).
%F A109595 a(n) = floor((n+2)/3)^((-3*(n mod 3)^2+7*(n mod 3)+2)/2). - _Luce ETIENNE_, Mar 01 2018
%t A109595 Flatten[Table[{n^3,n^2,n},{n,20}]] (* or *) LinearRecurrence[{0,0,4,0,0,-6,0,0,4,0,0,-1},{1,1,1,8,4,2,27,9,3,64,16,4},60] (* _Harvey P. Dale_, Aug 22 2014 *)
%Y A109595 Cf. A000463.
%Y A109595 Cf. A010872.
%K A109595 nonn
%O A109595 1,4
%A A109595 _Mohammad K. Azarian_, Aug 30 2005