Determinant of the n X n matrix whose element (i,j) equals |i-j| (mod 4).

Terms

a(0) =0a(1) =-1a(2) =4a(3) =-12a(4) =-64a(5) =-208a(6) =1088a(7) =-960a(8) =-8192a(9) =-6400a(10) =58368a(11) =-27648a(12) =-344064a(13) =-151552a(14) =1982464a(15) =-638976a(16) =-10485760a(17) =-3211264a(18) =54788096a(19) =-13369344a(20) =-272629760a(21) =-63963136a(22) =1346371584a(23) =-264241152a(24) =-6442450944a(25) =-1224736768a(26) =30668750848