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 A170767 #25 Sep 08 2022 08:45:49
%S A170767 1,48,2256,106032,4983504,234224688,11008560336,517402335792,
%T A170767 24317909782224,1142941759764528,53718262708932816,
%U A170767 2524758347319842352,118663642324032590544,5577191189229531755568,262127985893787992511696,12320015337008035648049712
%N A170767 Expansion of g.f.: (1+x)/(1-47*x).
%H A170767 Vincenzo Librandi, <a href="/A170767/b170767.txt">Table of n, a(n) for n = 0..600</a>
%H A170767 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (47).
%F A170767 a(n) = Sum_{k=0..n} A097805(n,k)*(-1)^(n-k)*48^k. - _Philippe Deléham_, Dec 04 2009
%F A170767 a(0) = 1; for n>0, a(n) = 48*47^(n-1). - _Vincenzo Librandi_, Dec 05 2009
%F A170767 E.g.f.: (48*exp(47*x) - 1)/47. - _G. C. Greubel_, Oct 11 2019
%p A170767 k:=48; seq(`if`(n=0, 1, k*(k-1)^(n-1)), n = 0..25); # _G. C. Greubel_, Oct 10 2019
%t A170767 CoefficientList[Series[(1+x)/(1-47*x), {x, 0, 30}], x] (* _Vincenzo Librandi_, Dec 09 2012 *)
%t A170767 With[{k = 48}, Table[If[n==0, 1, k*(k-1)^(n-1)], {n, 0, 25}]] (* _G. C. Greubel_, Oct 10 2019 *)
%t A170767 Join[{1},NestList[47#&,48,20]] (* _Harvey P. Dale_, Nov 07 2021 *)
%o A170767 (PARI) vector(26, n, k=48; if(n==1, 1, k*(k-1)^(n-2))) \\ _G. C. Greubel_, Oct 10 2019
%o A170767 (Magma) k:=48; [1] cat [k*(k-1)^(n-1): n in [1..25]]; // _G. C. Greubel_, Oct 10 2019
%o A170767 (Sage) k=48; [1]+[k*(k-1)^(n-1) for n in (1..25)] # _G. C. Greubel_, Oct 10 2019
%o A170767 (GAP) k:=48;; Concatenation([1], List([1..25], n-> k*(k-1)^(n-1) )); # _G. C. Greubel_, Oct 10 2019
%Y A170767 Cf. A003945.
%K A170767 nonn,easy
%O A170767 0,2
%A A170767 _N. J. A. Sloane_, Dec 04 2009