Triangle T(n, k) = k*(n-1)! - k!, read by rows.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =0a(6) =5a(7) =10a(8) =12a(9) =0a(10) =23a(11) =46a(12) =66a(13) =72a(14) =0a(15) =119a(16) =238a(17) =354a(18) =456a(19) =480a(20) =0a(21) =719a(22) =1438a(23) =2154a(24) =2856a(25) =3480a(26) =3600a(27) =0a(28) =5039a(29) =10078