Triangle n!/(n-k), 1 <= k < n, read by rows.

Terms

a(0) =2a(1) =3a(2) =6a(3) =8a(4) =12a(5) =24a(6) =30a(7) =40a(8) =60a(9) =120a(10) =144a(11) =180a(12) =240a(13) =360a(14) =720a(15) =840a(16) =1008a(17) =1260a(18) =1680a(19) =2520a(20) =5040a(21) =5760a(22) =6720a(23) =8064a(24) =10080a(25) =13440a(26) =20160a(27) =40320a(28) =45360a(29) =51840