Product of consecutive previous terms (starting with 2,3).

Terms

a(0) =2a(1) =3a(2) =6a(3) =18a(4) =36a(5) =108a(6) =324a(7) =648a(8) =3888a(9) =11664a(10) =23328a(11) =34992a(12) =69984a(13) =209952a(14) =419904a(15) =1259712a(16) =2519424a(17) =22674816a(18) =45349632a(19) =136048896a(20) =272097792a(21) =408146688a(22) =816293376a(23) =2448880128a(24) =14693280768a(25) =29386561536a(26) =88159684608a(27) =264479053824