Triangle read by rows: the triangle in A034855, with the n-th row normalized by dividing it by n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =9a(5) =6a(6) =1a(7) =40a(8) =60a(9) =24a(10) =1a(11) =195a(12) =560a(13) =420a(14) =120a(15) =1a(16) =1056a(17) =5550a(18) =6240a(19) =3240a(20) =720a(21) =1a(22) =6321a(23) =59472a(24) =94710a(25) =68880a(26) =27720a(27) =5040a(28) =1a(29) =41392