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 A013797 #19 Sep 08 2022 08:44:38 %S A013797 1728,35831808,743008370688,15407021574586368,319479999370622926848, %T A013797 6624737266949237011120128,137370551967459378662586974208, %U A013797 2848515765597237675947403497177088,59066822915424320448445358917464096768 %N A013797 a(n) = 12^(4*n + 3). %H A013797 Vincenzo Librandi, <a href="/A013797/b013797.txt">Table of n, a(n) for n = 0..200</a> %H A013797 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a> %H A013797 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (20736). %F A013797 a(n) = 20736*a(n-1); a(0) = 1728. - _Harvey P. Dale_, Apr 29 2012 %t A013797 12^(4*Range[0,20]+3) (* or *) NestList[20736#&,1728,20] (* _Harvey P. Dale_, Apr 29 2012 *) %o A013797 (Magma) [12^(4*n+3): n in [0..10]]; // _Vincenzo Librandi_, Jun 28 2011 %Y A013797 Subsequence of A001021. %K A013797 nonn,easy %O A013797 0,1 %A A013797 _N. J. A. Sloane_