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 A013754 #27 Sep 08 2022 08:44:38 %S A013754 14,38416,105413504,289254654976,793714773254144,2177953337809371136, %T A013754 5976303958948914397184,16398978063355821105872896, %U A013754 44998795805848373114515226624,123476695691247935826229781856256,338820052976784335907174521413566464,929722225368296217729286886758826377216 %N A013754 a(n) = 14^(3*n + 1). %H A013754 Vincenzo Librandi, <a href="/A013754/b013754.txt">Table of n, a(n) for n = 0..200</a> %H A013754 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a> %H A013754 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (2744). %F A013754 From _Philippe Deléham_, Nov 30 2008: (Start) %F A013754 a(n) = 2744*a(n-1); a(0)=14. %F A013754 G.f.: 14/(1-2744*x). %F A013754 a(n) = A013755(n)/14. (End) %t A013754 14^(3*Range[0,20]+1) (* or *) NestList[2744#&,14,20] (* _Harvey P. Dale_, May 16 2020 *) %o A013754 (Magma) [14^(3*n+1): n in [0..15]]; // _Vincenzo Librandi_, Jun 27 2011 %o A013754 (PARI) a(n)=14^(3*n+1) \\ _Charles R Greathouse IV_, Jun 27 2011 %Y A013754 Subsequence of A001023. %K A013754 nonn,easy %O A013754 0,1 %A A013754 _N. J. A. Sloane_