T(n, k) = k!*Stirling2(n - k, k), for n >= 0 and 0 <= k <= floor(n/2). Triangle read by rows.

Terms

a(0) =1a(1) =0a(2) =0a(3) =1a(4) =0a(5) =1a(6) =0a(7) =1a(8) =2a(9) =0a(10) =1a(11) =6a(12) =0a(13) =1a(14) =14a(15) =6a(16) =0a(17) =1a(18) =30a(19) =36a(20) =0a(21) =1a(22) =62a(23) =150a(24) =24a(25) =0a(26) =1a(27) =126a(28) =540a(29) =240