Triangle read by rows: T(n,k) = 2 - k! + 2*n! - (n-k)! - n!*binomial(n,k).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =0a(5) =1a(6) =1a(7) =-7a(8) =-7a(9) =1a(10) =1a(11) =-53a(12) =-98a(13) =-53a(14) =1a(15) =1a(16) =-383a(17) =-966a(18) =-966a(19) =-383a(20) =1a(21) =1a(22) =-2999a(23) =-9384a(24) =-12970a(25) =-9384a(26) =-2999a(27) =1a(28) =1a(29) =-25919