Numbers using only digits 2 and 3.

Terms

a(0) =2a(1) =3a(2) =22a(3) =23a(4) =32a(5) =33a(6) =222a(7) =223a(8) =232a(9) =233a(10) =322a(11) =323a(12) =332a(13) =333a(14) =2222a(15) =2223a(16) =2232a(17) =2233a(18) =2322a(19) =2323a(20) =2332a(21) =2333a(22) =3222a(23) =3223a(24) =3232a(25) =3233a(26) =3322a(27) =3323a(28) =3332a(29) =3333