Number of distinct characteristic polynomials of n X n matrices with elements {-1, +1}.
A272662
Number of distinct characteristic polynomials of n X n matrices with elements {-1, +1}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =28a(4) =203a(5) =3150a(6) =131641
External references
- oeis: A272662