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%I #11 Apr 20 2021 07:46:16
%S 0,228,29,22,0,5,1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%T 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%U 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
%N Number of sporadic maximal rational-angle line configurations with n lines, up to equivalence.
%C In dimensions 3 through 6 there are also one- or two-parameter families of solutions.
%C a(n) = 0 for n > 15, except a(aleph-0) = 1 (the perpendicular configuration).
%H K. S. Kedlaya, A. Kolpakov, B. Poonen, and M. Rubinstein, <a href="https://arxiv.org/abs/2011.14232">Space vectors forming rational angles</a>, arXiv preprint arXiv:2011.14232 [math.MG], 2020.
%K nonn
%O 3,2
%A _N. J. A. Sloane_, Apr 20 2021
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