Squarefree kernel of lcm(binomial(n,0), ..., binomial(n,n)).

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =10a(6) =30a(7) =105a(8) =70a(9) =42a(10) =210a(11) =2310a(12) =2310a(13) =4290a(14) =6006a(15) =15015a(16) =30030a(17) =170170a(18) =510510a(19) =1939938a(20) =1385670a(21) =881790a(22) =9699690a(23) =223092870a(24) =44618574a(25) =17160990a(26) =74364290a(27) =31870410a(28) =223092870a(29) =6469693230