Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min{2i+j,i+2j} (A204002).

A204003

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min{2i+j,i+2j} (A204002).

Terms

    a(0) =3a(1) =-1a(2) =2a(3) =-9a(4) =1a(5) =1a(6) =-9a(7) =18a(8) =-1a(9) =0a(10) =-5a(11) =25a(12) =-30a(13) =1a(14) =-1a(15) =3a(16) =14a(17) =-55a(18) =45a(19) =-1a(20) =-2a(21) =15a(22) =-27a(23) =-28a(24) =105a(25) =-63a(26) =1a(27) =-3a(28) =31a(29) =-110

External references