Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of (i+j), as in A003057.

A204168

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of (i+j), as in A003057.

Terms

    a(0) =2a(1) =-1a(2) =-1a(3) =-6a(4) =1a(5) =0a(6) =6a(7) =12a(8) =-1a(9) =0a(10) =0a(11) =-20a(12) =-20a(13) =1a(14) =0a(15) =0a(16) =0a(17) =50a(18) =30a(19) =-1a(20) =0a(21) =0a(22) =0a(23) =0a(24) =-105a(25) =-42a(26) =1a(27) =0a(28) =0a(29) =0

External references