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 A013816 #19 Sep 08 2022 08:44:38
%S A013816 22,5153632,1207269217792,282810057883082752,66249952919459433152512,
%T A013816 15519448971100888972574851072,3635524038174209847159494312722432,
%U A013816 851643319086537701956194499721106030592,199502557355935975909450298726667414302359552
%N A013816 a(n) = 22^(4*n+1).
%H A013816 Vincenzo Librandi, <a href="/A013816/b013816.txt">Table of n, a(n) for n = 0..100</a>
%H A013816 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>
%H A013816 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (234256).
%t A013816 Table[22^(4 n + 1), {n, 0, 10}] (* _Wesley Ivan Hurt_, Apr 11 2017 *)
%t A013816 NestList[234256#&,22,10] (* _Harvey P. Dale_, Apr 21 2022 *)
%o A013816 (Magma) [22^(4*n+1): n in [0..15]]; // _Vincenzo Librandi_, Jul 07 2011
%Y A013816 Subsequence of A009966.
%K A013816 nonn,easy
%O A013816 0,1
%A A013816 _N. J. A. Sloane_