Triangle T(n,k) = (-1)^k * A119258(n,k) read by rows, 0 <= k <= n.

Terms

a(0) =1a(1) =1a(2) =-1a(3) =1a(4) =-3a(5) =1a(6) =1a(7) =-5a(8) =7a(9) =-1a(10) =1a(11) =-7a(12) =17a(13) =-15a(14) =1a(15) =1a(16) =-9a(17) =31a(18) =-49a(19) =31a(20) =-1a(21) =1a(22) =-11a(23) =49a(24) =-111a(25) =129a(26) =-63a(27) =1a(28) =1a(29) =-13