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 A155655 #20 Jul 26 2024 12:41:36
%S A155655 1,14,112,854,6496,49574,379792,2920694,22542016,174571334,1356217072,
%T A155655 10567261334,82560763936,646644824294,5076269583952,39931933598774,
%U A155655 314707907280256,2484430327672454,19642812107392432,155514083261229014
%N A155655 a(n) = 8^n + 7^n - 1^n.
%H A155655 Paolo Xausa, <a href="/A155655/b155655.txt">Table of n, a(n) for n = 0..1000</a>
%H A155655 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (16,-71,56).
%F A155655 G.f.: 1/(1-8*x)+1/(1-7*x)-1/(1-x).
%F A155655 E.g.f.: e^(8*x)+e^(7*x)-e^x.
%F A155655 a(n) = 15*a(n-1)-56*a(n-2)-42 with a(0)=1, a(1)=14. - _Vincenzo Librandi_, Jul 21 2010
%t A155655 Table[8^n + 7^n - 1, {n, 0, 25}] (* _Paolo Xausa_, Jul 26 2024 *)
%o A155655 (PARI) a(n)=8^n+7^n-1 \\ _Charles R Greathouse IV_, Jun 11 2015
%Y A155655 Cf. A155638, A155639, A155640, A155641, A155642, A155643, A155644, A155645, A155646, A155647, A155648, A155649, A155650, A155651, A155652, A155653, A155654.
%K A155655 nonn,easy
%O A155655 0,2
%A A155655 _Mohammad K. Azarian_, Jan 31 2009