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 A083591 #10 Nov 04 2024 11:07:37
%S A083591 1,3,9,27,82,242,736,2188,6600,19736,59328,177744,533728,1600160,
%T A083591 4802560,14403520,43218816,129640064,388952832,1166793216,3500510464,
%U A083591 10501269248,31504332544,94511948032,283537942272,850609632512
%N A083591 Inverse binomial transform of A083589.
%H A083591 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (-1,6,14,12).
%F A083591 O.g.f.: -(1+x)^4/[(2*x+1)(2*x^2+2*x+1)(-1+3*x)]. - _R. J. Mathar_, Apr 02 2008
%t A083591 LinearRecurrence[{-1,6,14,12},{1,3,9,27,82},30] (* _Harvey P. Dale_, Nov 04 2024 *)
%Y A083591 Cf. A033139.
%K A083591 nonn,easy
%O A083591 0,2
%A A083591 _Paul Barry_, May 02 2003