Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min{i(j+1),j(i+1)} (A203996).

A203997

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min{i(j+1),j(i+1)} (A203996).

Terms

    a(0) =2a(1) =-1a(2) =3a(3) =-8a(4) =1a(5) =4a(6) =-19a(7) =20a(8) =-1a(9) =5a(10) =-34a(11) =69a(12) =-40a(13) =1a(14) =6a(15) =-53a(16) =160a(17) =-189a(18) =70a(19) =-1a(20) =7a(21) =-76a(22) =305a(23) =-552a(24) =434a(25) =-112a(26) =1a(27) =8a(28) =-103a(29) =516

External references