a(1) = 1, a(2) = (2*1)/1 = 2. a(n+1) = (n+1)*a(n) divided by the largest prime divisor of a(n).

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =10a(5) =12a(6) =28a(7) =32a(8) =144a(9) =480a(10) =1056a(11) =1152a(12) =4992a(13) =5376a(14) =11520a(15) =36864a(16) =208896a(17) =221184a(18) =1400832a(19) =1474560a(20) =6193152a(21) =19464192a(22) =40697856a(23) =42467328a(24) =353894400a(25) =1840250880a(26) =3822059520a(27) =21403533312a(28) =88671780864a(29) =91729428480