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%I #16 Jul 12 2021 03:28:11
%S 1,80,6400,512000,40960000,3276800000,262144000000,20971520000000,
%T 1677721600000000,134217728000000000,10737418240000000000,
%U 858993459200000000000,68719476736000000000000
%N Powers of 80.
%C Let T_n denote the n X n matrix with T_n(i,j) = 9^abs(i-j); then a(n) = abs(det(T_(n+1))). - _Lechoslaw Ratajczak_, Jun 17 2021
%H <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (80).
%F a(n) = A001018(n) * A011557(n).
%o (PARI) a(n)=80^n \\ _Charles R Greathouse IV_, Jun 19 2015
%o (PARI) powers(80,8) \\ _Charles R Greathouse IV_, Jun 19 2015
%K nonn,easy
%O 0,2
%A _Anders Wallberg_, Jun 18 2015
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