permanent of square matrix

[Werner]

(01-25-2024 03:49 PM)Albert Chan Wrote:  Note: 2*d[j] is just a number, not a list

Yes, but d[j] is +/-1, and he performs an addition or subtraction accordingly, no list/vector multiply necessary.
In the 42S, I decided not to do that as multiplying the matrix by 2 inevitably duplicates it, and memory is relatively tight.

Werner