

A117393


Number of different classes of entangling power of permutation matrices of dimension d^2, acting on a d X d (tensor product) Hilbert space.


0




OFFSET

1,2


COMMENTS

a(1), a(2) and a(3) were obtained via an exhaustive search; Lower bounds on a(4) through a(10) are 65, 190, 447, 890, 1603, 2675, 4200.  Lieven Clarisse, Jan 29 2017
I moved a(4)a(6) back to the data field, even though they have not been proved. If they are deleted the sequence melts away.  N. J. A. Sloane, Jan 31 2017


LINKS



CROSSREFS



KEYWORD

nonn,bref,hard,more


AUTHOR



EXTENSIONS

Moved terms a(4) and above to comments since those were not obtained via an exhaustive search (but believed to be correct).  Lieven Clarisse, Jan 29 2017. I restored a(4)a(6), see note above.  N. J. A. Sloane, Jan 31 2017


STATUS

approved



