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%I #17 Sep 08 2022 08:44:38
%S 9261,37822859361,154472377739119461,630880792396715529789561,
%T 2576580875108218291929075869661,
%U 10523016528610349434285830688358359761,42977062327514056734916195400155065458259861,175522663228862486625127968549968702993144556569961
%N a(n) = 21^(5*n + 3).
%H Vincenzo Librandi, <a href="/A013900/b013900.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 (4084101).
%F a(n) = 4084101*a(n-1), a(0)=9261. - _Vincenzo Librandi_, May 27 2011
%o (Magma) [21^(5*n+3): n in [0..10]]; // _Vincenzo Librandi_, May 27 2011
%Y Cf. A009965.
%K nonn
%O 0,1
%A _N. J. A. Sloane_