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 A016905 #17 Feb 11 2025 13:05:34
%S A016905 262144,387420489,20661046784,322687697779,2641807540224,
%T A016905 14507145975869,60716992766464,208728361158759,618121839509504,
%U A016905 1628413597910449,3904305912313344,8662995818654939,18014398509481984
%N A016905 a(n) = (5*n + 4)^9.
%H A016905 Vincenzo Librandi, <a href="/A016905/b016905.txt">Table of n, a(n) for n = 0..1000</a>
%H A016905 <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).
%F A016905 a(n) = 10*a(n-1) - 45*a(n-2) + 120*a(n-3) - 210*a(n-4) + 252*a(n-5) - 210*a(n-6) + 120*a(n-7) - 45*a(n-8) + 10*a(n-9) - a(n-10). - _Wesley Ivan Hurt_, Jun 09 2023
%t A016905 (5 Range[0, 20] + 4)^9 (* _Wesley Ivan Hurt_, Jun 09 2023 *)
%t A016905 LinearRecurrence[{10,-45,120,-210,252,-210,120,-45,10,-1},{262144,387420489,20661046784,322687697779,2641807540224,14507145975869,60716992766464,208728361158759,618121839509504,1628413597910449},20] (* _Harvey P. Dale_, Feb 11 2025 *)
%o A016905 (Magma) [(5*n+4)^9: n in [0..30]]; // _Vincenzo Librandi_, May 03 2011
%K A016905 nonn,easy
%O A016905 0,1
%A A016905 _N. J. A. Sloane_