Negative value of coefficient of x^(n-5) in the characteristic polynomial of a certain n X n integer circulant matrix.
A127410
Negative value of coefficient of x^(n-5) in the characteristic polynomial of a certain n X n integer circulant matrix.
Terms
- a(0) =1875a(1) =25920a(2) =184877a(3) =917504a(4) =3582306a(5) =11760000a(6) =33820710a(7) =87588864a(8) =208295373a(9) =461452992a(10) =962836875a(11) =1908408320a(12) =3617795636a(13) =6595852032a(14) =11617856508a(15) =19845120000a(16) =32979115575a(17) =53463778368a(18) =84747328281a(19) =131616866304a(20) =200621093750a(21) =300598812800a(22) =443333396610
External references
- oeis: A127410