94×94 {-1, +1} matrix of largest known determinant

Ratio of |Det R| to Ehlich/Wojtas bound: 0.0761647

M=R^TR:

M'=R R^T:

R:

Notes:

1. Cannot achieve Ehlich/Wojtas bound since 93=94-1 is not the sum of two squares.
2. This form has not been proved to be optimal.
3. This lower bound was reported by Koukouvinos, Mitrouli and Seberry [KMS].