A277746 Number of n X n QR matrix classes.

1, 3, 10, 47, 314, 3360, 59744

Offset

1,2

Links

Table of n, a(n) for n=1..7.

D. S. Dummit, E. P. Dummit, H. Kisilevsky, Characterizations of quadratic, cubic, and quartic residue matrices, arXiv preprint arXiv:1512.06480 [math.NT], 2015.

Crossrefs

Cf. A277748.

Sequence in context: A236410 A339836 A105748 * A140964 A368553 A220362

Adjacent sequences: A277743 A277744 A277745 * A277747 A277748 A277749

Keyword

nonn,more

Author

N. J. A. Sloane, Nov 08 2016

Status

approved