https://hal.archives-ouvertes.fr/hal-02070778/document https://hal.archives-ouvertes.fr/hal-02070778/document is the paper, which contains the closest thing to

https://hal.archives-ouvertes.fr/hal-02070778/document https://hal.archives-ouvertes.fr/hal-02070778/document is the paper, which contains the closest thing to an implementation that I believe exists, and the answer for n is 'so large it would never fit in memory'. This is an important result mathematically, not something intended for practical use.