Numbers having four 3's in base 6.

Terms

a(0) =777a(1) =2073a(2) =3369a(3) =4017a(4) =4233a(5) =4449a(6) =4557a(7) =4593a(8) =4629a(9) =4647a(10) =4653a(11) =4659a(12) =4662a(13) =4663a(14) =4664a(15) =4666a(16) =4667a(17) =4671a(18) =4677a(19) =4701a(20) =4737a(21) =4881a(22) =5097a(23) =5961a(24) =7257a(25) =8553a(26) =9849a(27) =11145a(28) =11793a(29) =12009