5 May
2020
5 May
'20
10:15 a.m.
How about the sequence of the number of n^2 x n^2 sudoku solutions that are positive definite? -Veit
On May 5, 2020, at 12:01 PM, Neil Sloane <njasloane@gmail.com> wrote:
This point came up a few years ago (around 2003) in connection with counting n X n real {0,1} matrices which are (i) positive definite, or (ii) have all eigenvalues positive, etc. See A003024, A085656, plus there are several related sequences.
Best regards Neil