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 A013771 #17 Sep 08 2022 08:44:38 %S A013771 484,5153632,54875873536,584318301411328,6221821273427820544, %T A013771 66249952919459433152512,705429498686404044207947776, %U A013771 7511413302012830262726227918848,79981528839832616637508874879893504,851643319086537701956194499721106030592 %N A013771 a(n) = 22^(3*n + 2). %H A013771 Vincenzo Librandi, <a href="/A013771/b013771.txt">Table of n, a(n) for n = 0..200</a> %H A013771 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a> %H A013771 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (10648). %o A013771 (Magma) [22^(3*n+2): n in [0..10]]; // _Vincenzo Librandi_, Jun 27 2011 %Y A013771 Subsequence of A009966. %K A013771 nonn,easy %O A013771 0,1 %A A013771 _N. J. A. Sloane_