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 A017055 #17 Sep 08 2022 08:44:41
%S A017055 216,2197,8000,19683,39304,68921,110592,166375,238328,328509,438976,
%T A017055 571787,729000,912673,1124864,1367631,1643032,1953125,2299968,2685619,
%U A017055 3112136,3581577,4096000,4657463,5268024
%N A017055 a(n) = (7*n + 6)^3.
%H A017055 Vincenzo Librandi, <a href="/A017055/b017055.txt">Table of n, a(n) for n = 0..10000</a>
%H A017055 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (4,-6,4,-1).
%F A017055 G.f.: ( 216 + 1333*x + 508*x^2 + x^3 ) / (x-1)^4. - _R. J. Mathar_, Aug 01 2014
%t A017055 (7*Range[0,30]+6)^3 (* or *) LinearRecurrence[{4,-6,4,-1},{216,2197,8000,19683},30] (* _Harvey P. Dale_, Mar 06 2019 *)
%o A017055 (Magma) [(7*n+6)^3: n in [0..40]]; // _Vincenzo Librandi_, Jul 10 2011
%Y A017055 Cf. A017053 (7*n+6).
%K A017055 nonn,easy
%O A017055 0,1
%A A017055 _N. J. A. Sloane_