%I
%S 3,27,19683,7625597484987,443426488243037769948249630619149892803
%N 3^(3^n).
%C a(n+1) = a(n) written in base 3 and read as if in base 27 (and recorded in base 10).
%C Number of distinct nary operators in a ternary logic.  _Ross Drewe_, Feb 13 2008
%C The next term has 116 digits.  _Harvey P. Dale_, Mar 28 2019
%F a(n) =a(n1)^3.
%t NestList[#^3&,3,5] (* _Harvey P. Dale_, Mar 28 2019 *)
%Y Cf. A001146, A023365.
%K nonn
%O 0,1
%A _Henry Bottomley_, Jul 12 2000
%E Next term is too big to include.
