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 A155632 #27 Jul 27 2024 09:38:56
%S A155632 1,8,106,1268,14386,160028,1767466,19470788,214293346,2357685548,
%T A155632 25936376026,285307476308,3138411599506,34522645035068,
%U A155632 379749565147786,4177247095673828,45949725568604866,505447011319424588,5559917244772754746,61159090173536639348,672749993833048381426
%N A155632 a(n) = 11^n - 4^n + 1^n.
%H A155632 Paolo Xausa, <a href="/A155632/b155632.txt">Table of n, a(n) for n = 0..950</a>
%H A155632 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (16,-59,44).
%F A155632 G.f.: 1/(1-11*x)-1/(1-4*x)+1/(1-x).
%F A155632 E.g.f.: e^(11*x)-e^(4*x)+e^x.
%F A155632 a(n) = 15*a(n-1)-44*a(n-2)+30 with a(0) = 1, a(1) = 8. - _Vincenzo Librandi_, Jul 21 2010
%t A155632 Table[11^n - 4^n + 1, {n, 0, 25}] (* _Paolo Xausa_, Jul 26 2024 *)
%o A155632 (PARI) a(n)=11^n-4^n+1 \\ _Charles R Greathouse IV_, Sep 24 2015
%Y A155632 Cf. A155596, A155597, A155598, A155599, A155600, A155601, A155622, A155623, A155624, A155625, A155626, A155627, A155628, A155629, A155630, A155631.
%K A155632 nonn,easy
%O A155632 0,2
%A A155632 _Mohammad K. Azarian_, Jan 30 2009