a(n) = core(A143176(n)).

Terms

a(0) =1a(1) =2a(2) =6a(3) =3a(4) =30a(5) =1a(6) =21a(7) =30a(8) =5a(9) =15a(10) =165a(11) =5a(12) =390a(13) =35a(14) =105a(15) =5a(16) =170a(17) =35a(18) =3990a(19) =70a(20) =105a(21) =770a(22) =805a(23) =2310a(24) =154a(25) =1365a(26) =21a(27) =77a(28) =22330a(29) =385