%I #7 Oct 05 2019 04:53:39
%S 1,20822964865671168,324,4130428534112329328517709824,5832,612220032,
%T 708235345355337676357632,819308872942260126404286866009182175232,
%U 9028751479390699717312017900815782025058563653632,104976,11019960576
%N Smallest power of 18 that begins with n.
%Y Cf. A001027, A180701, A180704, A180705.
%K nonn,base
%O 1,2
%A _Daniel Mondot_, Sep 18 2010