%I #13 Oct 26 2016 16:21:40
%S 3,8,18,128,4738,4231753,1187731018833,42594869705663096099408,
%T 3228772089507297652799675584374257094299778,
%U 238200612646309727576717504065098580513132891337980299297637999749548388051354688
%N a(n+1) = a(n) converted to base 8 from base 3 (written in base 10).
%H John Cerkan, <a href="/A023371/b023371.txt">Table of n, a(n) for n = 1..13</a>
%t NestList[FromDigits[IntegerDigits[#,3],8]&,3,10] (* _Harvey P. Dale_, Jan 29 2012 *)
%K nonn,base
%O 1,1
%A _David W. Wilson_
%E a(10) from _John Cerkan_, Oct 25 2016