Table by antidiagonals where T(n,k) = n*T(n,k-1) - T(n,k-2) with T(n,0) = 2 and T(n,1) = n.

Terms

a(0) =2a(1) =0a(2) =2a(3) =-2a(4) =1a(5) =2a(6) =0a(7) =-1a(8) =2a(9) =2a(10) =2a(11) =-2a(12) =2a(13) =3a(14) =2a(15) =0a(16) =-1a(17) =2a(18) =7a(19) =4a(20) =2a(21) =-2a(22) =1a(23) =2a(24) =18a(25) =14a(26) =5a(27) =2a(28) =0a(29) =2