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%I #10 Jun 14 2024 22:31:09
%S 120,9360000,457002000000000,13946558535000000000000000,
%T 266009466302345390625000000000000000000,
%U 3171079936179764469273010253906250000000000000000000000
%N Order of universal Chevalley group B_n (5).
%D J. H. Conway, R. T. Curtis, S. P. Norton, R. A. Parker and R. A. Wilson, ATLAS of Finite Groups. Oxford Univ. Press, 1985 [for best online version see https://oeis.org/wiki/Welcome#Links_to_Other_Sites], p. xvi.
%D H. S. M. Coxeter and W. O. J. Moser, Generators and Relations for Discrete Groups, 4th ed., Springer-Verlag, NY, reprinted 1984, p. 131.
%F a(n) = B(5,n) where B(q,n) is defined in A003920. - _Sean A. Irvine_, Sep 22 2015
%K nonn,easy
%O 1,1
%A _N. J. A. Sloane_
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