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A277746 Number of n X n QR matrix classes. 1
1, 3, 10, 47, 314, 3360, 59744 (list; graph; refs; listen; history; text; internal format)
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: A249479 A236410 A105748 * A140964 A220362 A005921

Adjacent sequences:  A277743 A277744 A277745 * A277747 A277748 A277749

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Nov 08 2016

STATUS

approved

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Last modified November 18 22:39 EST 2019. Contains 329305 sequences. (Running on oeis4.)