A self-generating sequence: there are a(n) 3's between successive 2's.

Terms

a(0) =2a(1) =3a(2) =3a(3) =2a(4) =3a(5) =3a(6) =3a(7) =2a(8) =3a(9) =3a(10) =3a(11) =2a(12) =3a(13) =3a(14) =2a(15) =3a(16) =3a(17) =3a(18) =2a(19) =3a(20) =3a(21) =3a(22) =2a(23) =3a(24) =3a(25) =3a(26) =2a(27) =3a(28) =3a(29) =2