Determinant of the n X n matrix whose element (i,j) equals |i-j| (Mod 3).

Terms

a(0) =0a(1) =-1a(2) =4a(3) =9a(4) =-10a(5) =4a(6) =18a(7) =-19a(8) =4a(9) =27a(10) =-28a(11) =4a(12) =36a(13) =-37a(14) =4a(15) =45a(16) =-46a(17) =4a(18) =54a(19) =-55a(20) =4a(21) =63a(22) =-64a(23) =4a(24) =72a(25) =-73a(26) =4a(27) =81a(28) =-82a(29) =4