Number of different determinants of n X n persymmetric matrices with entries {-1,0,+1}.
A034921
Number of different determinants of n X n persymmetric matrices with entries {-1,0,+1}.
Terms
- a(0) =3a(1) =4a(2) =9a(3) =23a(4) =67a(5) =192a(6) =833a(7) =2857a(8) =13797a(9) =53336a(10) =302115a(11) =1271704
External references
- oeis: A034921