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 A016282 #28 Nov 29 2022 14:48:37
%S A016282 1,11,83,535,3171,17871,97483,520055,2731091,14179231,72992283,
%T A016282 373347975,1900290211,9635660591,48715157483,245723238295,
%U A016282 1237206060531,6220389909951,31239388241083,156746696495015,785932504682051,3938458614335311,19727477439571083
%N A016282 Expansion of 1/((1-2*x)*(1-4*x)*(1-5*x)).
%H A016282 Vincenzo Librandi, <a href="/A016282/b016282.txt">Table of n, a(n) for n = 0..300</a>
%H A016282 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (11,-38,40).
%F A016282 a(n) = (2/3)*2^n - 8*(4)^n + (25/3)*5^n. - _Antonio Alberto Olivares_, May 12 2012
%t A016282 CoefficientList[ Series[ 1/((1 - 2x)(1 - 4x)(1 - 5x)), {x, 0, 20} ], x ]
%t A016282 LinearRecurrence[{11,-38,40},{1,11,83},30] (* _Harvey P. Dale_, Nov 29 2022 *)
%o A016282 (Sage) [(5^n - 2^n)/3-(4^n - 2^n)/2 for n in range(2,21)] # _Zerinvary Lajos_, Jun 05 2009
%o A016282 (PARI) Vec(1/((1-2*x)*(1-4*x)*(1-5*x))+O(x^99)) \\ _Charles R Greathouse IV_, Sep 26 2012
%Y A016282 Cf. A006516, A016127, A016129, A016130, A016311, A016316, A016321, A016325. - _Zerinvary Lajos_, Jun 05 2009
%K A016282 nonn,easy
%O A016282 0,2
%A A016282 _N. J. A. Sloane_