%I #6 Mar 30 2012 18:39:10
%S 12,78732,200126180395998828,
%T 29580416459496810047953577440487325756896718148771211628,
%U 859701978563120631640435743558342557761001110865498968863348734354573094697208147363766878468578515487017135250188680524136048749696547808864928561464719649040763860770252
%N Integer values of 1/(3/4-sum(i = 1,m,i/3^i)).
%C sum(i>=1,i/3^i) = 3/4
%F a(n) = 4*sqrt(3)^(3^n-2n-3)
%o (PARI) a(n)=4*3^((3^n-2*n-3)/2)
%K nonn
%O 2,1
%A _Benoit Cloitre_, Oct 25 2002