Triangle T(n,k) = A006130(k) - A006130(n) + A006130(n-k) read by rows.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =-2a(5) =1a(6) =1a(7) =-2a(8) =-2a(9) =1a(10) =1a(11) =-11a(12) =-11a(13) =-11a(14) =1a(15) =1a(16) =-20a(17) =-29a(18) =-29a(19) =-20a(20) =1a(21) =1a(22) =-56a(23) =-74a(24) =-83a(25) =-74a(26) =-56a(27) =1a(28) =1a(29) =-119