Triangle: Matrix inverse of A047996.

Terms

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