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 A017366 #15 Jul 08 2025 06:04:14
%S A017366 64,324,784,1444,2304,3364,4624,6084,7744,9604,11664,13924,16384,
%T A017366 19044,21904,24964,28224,31684,35344,39204,43264,47524,51984,56644,
%U A017366 61504,66564,71824,77284,82944,88804
%N A017366 a(n) = (10*n+8)^2.
%H A017366 Vincenzo Librandi, <a href="/A017366/b017366.txt">Table of n, a(n) for n = 0..10000</a>
%H A017366 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (3,-3,1).
%F A017366 a(n) = 4*A016898(n). - _Michel Marcus_, Aug 26 2015
%t A017366 (10 Range[0,30]+8)^2 (* or *) LinearRecurrence[{3,-3,1},{64,324,784},30] (* _Harvey P. Dale_, Dec 17 2016 *)
%o A017366 (Magma) [(10*n+8)^2: n in [0..40]]; // _Vincenzo Librandi_, Aug 31 2011
%o A017366 (PARI) a(n) = (10*n+8)^2; \\ _Michel Marcus_, Aug 26 2015
%Y A017366 Cf. A016898.
%K A017366 nonn,easy
%O A017366 0,1
%A A017366 _N. J. A. Sloane_