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 A155592 #16 Mar 10 2022 05:33:44
%S A155592 1,9,67,519,4111,32799,262207,2097279,16777471,134218239,1073742847,
%T A155592 8589936639,68719480831,549755822079,4398046527487,35184372121599,
%U A155592 281474976776191,2251799813816319,18014398509744127,144115188076380159
%N A155592 8^n+2^n-1^n.
%H A155592 <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (11,-26,16).
%F A155592 G.f.: 1/(1-8*x)+1/(1-2*x)-1/(1-x). E.g.f.: e^(8*x)+e^(2*x)-e^x.
%F A155592 a(n)=10*a(n-1)-16*a(n-2)-7 with a(0)=1, a(1)=9 - _Vincenzo Librandi_, Jul 21 2010
%F A155592 a(n) = A074603(n)-1. - _R. J. Mathar_, Mar 10 2022
%t A155592 Table[8^n+2^n-1^n,{n,0,30}] (* or *) LinearRecurrence[{11,-26,16},{1,9,67},30] (* _Harvey P. Dale_, Jul 09 2017 *)
%o A155592 (PARI) a(n)=8^n+2^n-1 \\ _Charles R Greathouse IV_, Jun 11 2015
%Y A155592 Cf. A074501, A074600, A005057, A005056, A099393, A155588, A155590.
%K A155592 nonn,easy
%O A155592 0,2
%A A155592 _Mohammad K. Azarian_, Jan 24 2009