Triangle T(n,k) = (1-k*(k-1))*A053120(n,k), read by rows, 0<=k<=n.

Terms

a(0) =1a(1) =0a(2) =1a(3) =-1a(4) =0a(5) =-2a(6) =0a(7) =-3a(8) =0a(9) =-20a(10) =1a(11) =0a(12) =8a(13) =0a(14) =-88a(15) =0a(16) =5a(17) =0a(18) =100a(19) =0a(20) =-304a(21) =-1a(22) =0a(23) =-18a(24) =0a(25) =528a(26) =0a(27) =-928a(28) =0a(29) =-7