Geometric mean of n-th row of A080504.

Terms

a(0) =1a(1) =3a(2) =6a(3) =10a(4) =30a(5) =12a(6) =210a(7) =330a(8) =210a(9) =210a(10) =2310a(11) =3570a(12) =30030a(13) =2310a(14) =30030a(15) =690690a(16) =510510a(17) =30030a(18) =9699690a(19) =14804790a(20) =9699690a(21) =19399380a(22) =223092870a(23) =9699690a(24) =223092870a(25) =223092870a(26) =223092870a(27) =9146807670a(28) =6469693230a(29) =223092870