Number of n X n symmetric positive definite matrices with 2's on the main diagonal and -1's and 0's elsewhere.
A084552
Number of n X n symmetric positive definite matrices with 2's on the main diagonal and -1's and 0's elsewhere.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =38a(4) =286a(5) =2686a(6) =28512a(7) =312572a(8) =3337588a(9) =40963216
External references
- oeis: A084552