a(1)=1. a(n+1) = n!/lcm(a(1),a(2),...,a(n)).

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =4a(5) =10a(6) =12a(7) =84a(8) =96a(9) =108a(10) =120a(11) =1320a(12) =1440a(13) =18720a(14) =20160a(15) =151200a(16) =483840a(17) =1028160a(18) =1088640a(19) =2298240a(20) =2419200a(21) =50803200a(22) =159667200a(23) =1836172800a(24) =1916006400a(25) =11975040000a(26) =12454041600a(27) =336259123200a(28) =348713164800