Triangle T(n,k) = Product_{j=0..k} n*j+1.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =3a(5) =15a(6) =1a(7) =4a(8) =28a(9) =280a(10) =1a(11) =5a(12) =45a(13) =585a(14) =9945a(15) =1a(16) =6a(17) =66a(18) =1056a(19) =22176a(20) =576576a(21) =1a(22) =7a(23) =91a(24) =1729a(25) =43225a(26) =1339975a(27) =49579075a(28) =1a(29) =8