a(n) is the permanent of the matrix [((i + j)/(2*n + 1))]_{i,j=0..n}, where (k/m) denotes the Jacobi symbol.
A322898
a(n) is the permanent of the matrix [((i + j)/(2*n + 1))]_{i,j=0..n}, where (k/m) denotes the Jacobi symbol.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =2a(4) =20a(5) =16a(6) =48a(7) =55a(8) =128a(9) =320a(10) =1206a(11) =768a(12) =406446336a(13) =43545600a(14) =141312a(15) =2267136a(16) =389112a(17) =1624232a(18) =138739712a(19) =122605392a(20) =2262695936a(21) =20313407488a(22) =17060393728a(23) =189261676544a(25) =669835780976
External references
- oeis: A322898