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 A038797 #19 Apr 25 2023 05:29:48
%S A038797 1,6,23,73,211,581,1560,4135,10890,28590,74946,196326,514123,1346148,
%T A038797 3524441,9227311,24157645,63245795,165579930,433494205,1134902916,
%U A038797 2971214796,7778741748,20365010748,53316290821,139583862066,365435295755,956722025605,2504730781495
%N A038797 T(n+4,n), array T as in A038792.
%H A038797 Stefano Spezia, <a href="/A038797/b038797.txt">Table of n, a(n) for n = 0..2300</a>
%H A038797 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (6,-13,13,-6,1).
%F A038797 G.f.: 1/((1 - 3*x + x^2)*(1 - x)^3). [Maksym Voznyy (voznyy(AT)mail.ru), Aug 14 2009]
%t A038797 CoefficientList[Series[1/((1-3*x+x^2)*(1-x)^3),{x,0,28}],x] (* _Stefano Spezia_, Apr 24 2023 *)
%Y A038797 Apparently the same as A038737.
%Y A038797 Cf. A038792.
%K A038797 nonn,easy
%O A038797 0,2
%A A038797 _Clark Kimberling_, May 02 2000
%E A038797 Definition corrected by _R. J. Mathar_, Sep 16 2009