Array read by rows: row n lists the coefficients of the characteristic polynomial of the n-th principal submatrix of max(2i-j, 2j-i), as in A204154.

A204155

Array read by rows: row n lists the coefficients of the characteristic polynomial of the n-th principal submatrix of max(2i-j, 2j-i), as in A204154.

Terms

    a(0) =1a(1) =-1a(2) =-7a(3) =-3a(4) =1a(5) =33a(6) =39a(7) =6a(8) =-1a(9) =-135a(10) =-255a(11) =-125a(12) =-10a(13) =1a(14) =513a(15) =1323a(16) =1092a(17) =305a(18) =15a(19) =-1a(20) =-1863a(21) =-6075a(22) =-7047a(23) =-3444a(24) =-630a(25) =-21a(26) =1a(27) =6561a(28) =25839a(29) =38610

External references