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A277746
Number of n X n QR matrix classes.
1
1, 3, 10, 47, 314, 3360, 59744
OFFSET
1,2
LINKS
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
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Nov 08 2016
STATUS
approved