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 A013729 #26 Feb 21 2024 08:23:13 %S A013729 24,13824,7962624,4586471424,2641807540224,1521681143169024, %T A013729 876488338465357824,504857282956046106624,290797794982682557415424, %U A013729 167499529910025153071284224,96479729228174488169059713024 %N A013729 a(n) = 24^(2*n + 1). %H A013729 Vincenzo Librandi, <a href="/A013729/b013729.txt">Table of n, a(n) for n = 0..100</a> %H A013729 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a> %H A013729 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (576). %F A013729 From _Philippe Deléham_, Nov 28 2008: (Start) %F A013729 a(n) = 576*a(n-1); a(0)=24. %F A013729 G.f.: 24/(1-576*x). %F A013729 a(n) = A013713(n)*A013708(n). (End) %p A013729 seq(24^(2*n+1),n=0..10); # _Nathaniel Johnston_, Jun 26 2011 %t A013729 24^(2*Range[0, 15]+1) (* or *) %t A013729 NestList[576*# &, 24, 15] (* _Paolo Xausa_, Feb 21 2024 *) %o A013729 (Magma) [24^(2*n+1): n in [0..15]]; // _Vincenzo Librandi_, May 25 2011 %o A013729 (PARI) a(n)=24^(2*n+1) \\ _Charles R Greathouse IV_, Jul 11 2016 %Y A013729 Cf. A013708-A013728. %K A013729 nonn,easy %O A013729 0,1 %A A013729 _N. J. A. Sloane_