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A277748 Number of n X n QR matrices. 1


%S 1,4,40,768,27648,1900544,253755392

%N Number of n X n QR matrices.

%H D. S. Dummit, E. P. Dummit, H. Kisilevsky, <a href="https://arxiv.org/abs/1512.06480">Characterizations of quadratic, cubic, and quartic residue matrices</a>, arXiv preprint arXiv:1512.06480 [math.NT], 2015.

%Y Cf. A277746.

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, Nov 08 2016

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Last modified September 25 19:59 EDT 2021. Contains 347659 sequences. (Running on oeis4.)