All ones and negatives ones tri-antidiagonal matrices like as characteristic polynomial triangular sequence: M(3)={{0, -1, 1}, {-1, 1, -1}, {1, -1, 0}}.

A124021

All ones and negatives ones tri-antidiagonal matrices like as characteristic polynomial triangular sequence: M(3)={{0, -1, 1}, {-1, 1, -1}, {1, -1, 0}}.

Terms

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

External references