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 A016773 #14 Sep 08 2022 08:44:41 %S A016773 0,19683,10077696,387420489,5159780352,38443359375,198359290368, %T A016773 794280046581,2641807540224,7625597484987,19683000000000, %U A016773 46411484401953,101559956668416,208728361158759,406671383849472 %N A016773 a(n) = (3*n)^9. %H A016773 Vincenzo Librandi, <a href="/A016773/b016773.txt">Table of n, a(n) for n = 0..1000</a> %H A016773 <a href="/index/Rec#order_10">Index entries for linear recurrences with constant coefficients</a>, signature (10, -45, 120, -210, 252, -210, 120, -45, 10, -1). %o A016773 (Magma) [(3*n)^9: n in [0..20]]; // _Vincenzo Librandi_, May 09 2011 %Y A016773 Cf. A001017 (n^9). %K A016773 nonn,easy %O A016773 0,2 %A A016773 _N. J. A. Sloane_