Triangle read by rows: the positive terms of A163626.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =12a(6) =1a(7) =50a(8) =24a(9) =1a(10) =180a(11) =360a(12) =1a(13) =602a(14) =3360a(15) =720a(16) =1a(17) =1932a(18) =25200a(19) =20160a(20) =1a(21) =6050a(22) =166824a(23) =332640a(24) =40320a(25) =1a(26) =18660a(27) =1020600a(28) =4233600a(29) =1814400