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 A013906 #22 Sep 08 2022 08:44:38
%S A013906 23,148035889,952809757913927,6132610415680998648961,
%T A013906 39471584120695485887249589623,254052654154149545721997685422868689,
%U A013906 1635170022196481349560959748587682926364327,10524515126174167358877236351104092889324551536161,67739389260745218861137988047774370539553852007909099223
%N A013906 a(n) = 23^(5*n + 1).
%H A013906 Vincenzo Librandi, <a href="/A013906/b013906.txt">Table of n, a(n) for n = 0..50</a>
%H A013906 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>
%H A013906 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (6436343).
%F A013906 a(n) = 6436343*a(n-1), a(0)=23. - _Vincenzo Librandi_, May 29 2011
%F A013906 a(n) = A009967(A016861(n)). - _Wesley Ivan Hurt_, Jan 30 2014
%F A013906 E.g.f.: 23*exp(6436343*x). - _Alejandro J. Becerra Jr._, Jun 27 2021
%p A013906 A013906:=n->23^(5*n + 1); seq(A013906(n), n=0..10); # _Wesley Ivan Hurt_, Jan 30 2014
%t A013906 Table[23^(5n + 1), {n, 0, 10}] (* _Wesley Ivan Hurt_, Jan 30 2014 *)
%o A013906 (Magma) [23^(5*n+1): n in [0..10]]; // _Vincenzo Librandi_, May 29 2011
%Y A013906 Cf. A009967, A016861.
%K A013906 nonn
%O A013906 0,1
%A A013906 _N. J. A. Sloane_