Triangle read by rows: T(0, 0) = -1. T(n, k) = [x^k] det(M - x*I), where M is an n X n matrix defined by M(i, j) = (-1)^i if i = j, M(i, j) = -1 if |i-j| = 1, and M(i, j) = 0 otherwise.
A124031
Triangle read by rows: T(0, 0) = -1. T(n, k) = [x^k] det(M - x*I), where M is an n X n matrix defined by M(i, j) = (-1)^i if i = j, M(i, j) = -1 if |i-j| = 1, and M(i, j) = 0 otherwise.
Terms
- a(0) =-1a(1) =-1a(2) =-1a(3) =-2a(4) =0a(5) =1a(6) =3a(7) =3a(8) =-1a(9) =-1a(10) =5a(11) =0a(12) =-5a(13) =0a(14) =1a(15) =-8a(16) =-8a(17) =6a(18) =6a(19) =-1a(20) =-1a(21) =-13a(22) =0a(23) =19a(24) =0a(25) =-8a(26) =0a(27) =1a(28) =21a(29) =21
External references
- oeis: A124031