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 A013737 #27 Jul 08 2025 07:51:03 %S A013737 25,3125,390625,48828125,6103515625,762939453125,95367431640625, %T A013737 11920928955078125,1490116119384765625,186264514923095703125, %U A013737 23283064365386962890625,2910383045673370361328125,363797880709171295166015625,45474735088646411895751953125,5684341886080801486968994140625 %N A013737 a(n) = 5^(3*n + 2). %H A013737 Vincenzo Librandi, <a href="/A013737/b013737.txt">Table of n, a(n) for n = 0..100</a> %H A013737 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>. %H A013737 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (125). %F A013737 From _Philippe Deléham_, Nov 25 2008: (Start) %F A013737 a(n) = 125*a(n-1); a(0)=25. %F A013737 G.f.: 25/(1-125*x). (End) %F A013737 From _Elmo R. Oliveira_, Jul 07 2025: (Start) %F A013737 E.g.f.: 25*exp(125*x). %F A013737 a(n) = 5*A013736(n) = A000351(A016789(n)). (End) %p A013737 seq(5^(3*n+2),n=0..12); # _Nathaniel Johnston_, Jun 26 2011 %o A013737 (Magma) [5^(3*n+2): n in [0..20]]; // _Vincenzo Librandi_, May 25 2011 %o A013737 (PARI) a(n)=5^(3*n+2) \\ _Charles R Greathouse IV_, Jul 11 2016 %Y A013737 Cf. A000351, A013736, A016789. %K A013737 nonn,easy %O A013737 0,1 %A A013737 _N. J. A. Sloane_