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%I #21 Sep 08 2022 08:44:38
%S 160000,512000000000,1638400000000000000,5242880000000000000000000,
%T 16777216000000000000000000000000,
%U 53687091200000000000000000000000000000,171798691840000000000000000000000000000000000,549755813888000000000000000000000000000000000000000
%N a(n) = 20^(5*n + 4).
%H Vincenzo Librandi, <a href="/A013897/b013897.txt">Table of n, a(n) for n = 0..50</a>
%H Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a>
%H <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (3200000).
%F a(n) = 3200000*a(n-1), a(0)=160000. - _Vincenzo Librandi_, May 27 2011
%t 20^(5*Range[0,10]+4) (* or *) NestList[3200000#&,160000,10] (* _Harvey P. Dale_, Feb 15 2016 *)
%o (Magma) [20^(5*n+4): n in [0..10]]; // _Vincenzo Librandi_, May 27 2011
%Y Cf. A009964.
%K nonn
%O 0,1
%A _N. J. A. Sloane_
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