Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of ceiling((i+j)/2), as in A204166.
A204167
Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of ceiling((i+j)/2), as in A204166.
Terms
- a(0) =1a(1) =-1a(2) =-2a(3) =-3a(4) =1a(5) =1a(6) =6a(7) =6a(8) =-1a(9) =0a(10) =-4a(11) =-16a(12) =-10a(13) =1a(14) =0a(15) =0a(16) =15a(17) =32a(18) =15a(19) =-1a(20) =0a(21) =0a(22) =0a(23) =-36a(24) =-60a(25) =-21a(26) =1a(27) =0a(28) =0a(29) =0
External references
- oeis: A204167