Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min{i-j+1,j-i+1} (A203994).
A203995
Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min{i-j+1,j-i+1} (A203994).
Terms
- a(0) =1a(1) =-1a(2) =1a(3) =-2a(4) =1a(5) =0a(6) =-2a(7) =3a(8) =-1a(9) =-4a(10) =8a(11) =0a(12) =-4a(13) =1a(14) =-16a(15) =56a(16) =-56a(17) =10a(18) =5a(19) =-1a(20) =-48a(21) =224a(22) =-360a(23) =224a(24) =-35a(25) =-6a(26) =1a(27) =-128a(28) =736a(29) =-1584
External references
- oeis: A203995