Ratios of successive terms are 2, 3, 2, 3, 2, 3, 2, 3, ...

Terms

a(0) =1a(1) =2a(2) =6a(3) =12a(4) =36a(5) =72a(6) =216a(7) =432a(8) =1296a(9) =2592a(10) =7776a(11) =15552a(12) =46656a(13) =93312a(14) =279936a(15) =559872a(16) =1679616a(17) =3359232a(18) =10077696a(19) =20155392a(20) =60466176a(21) =120932352a(22) =362797056a(23) =725594112a(24) =2176782336a(25) =4353564672a(26) =13060694016a(27) =26121388032a(28) =78364164096a(29) =156728328192