Table read by rows, T(n, k) (for 0 <= k <= n) = (-2)^(n - k)*k!*Stirling2(n, k).

Terms

a(0) =1a(1) =0a(2) =1a(3) =0a(4) =-2a(5) =2a(6) =0a(7) =4a(8) =-12a(9) =6a(10) =0a(11) =-8a(12) =56a(13) =-72a(14) =24a(15) =0a(16) =16a(17) =-240a(18) =600a(19) =-480a(20) =120a(21) =0a(22) =-32a(23) =992a(24) =-4320a(25) =6240a(26) =-3600a(27) =720a(28) =0a(29) =64