A generalization of triangle A071951 (Legendre-Stirling).

Terms

a(0) =1a(1) =120a(2) =1a(3) =14400a(4) =840a(5) =1a(6) =1728000a(7) =619200a(8) =3360a(9) =1a(10) =207360000a(11) =447552000a(12) =9086400a(13) =10080a(14) =1a(15) =24883200000a(16) =322444800000a(17) =23345280000a(18) =76824000a(19) =25200a(20) =1a(24) =539602560000a(25) =457848000