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%I #11 Oct 09 2020 03:50:26
%S 2,3,7,31,127,168,8191,20160,131071,524287,9999360,2147483647,
%T 20158709760,163849992929280,2305843009213693951,5348063769211699200,
%U 699612310033197642547200,618970019642690137449562111,366440137299948128422802227200,162259276829213363391578010288127
%N List of orders of finite simple groups which are unit groups of rings.
%C The rings are assumed to be unital, but not necessarily commutative, and ring homomorphisms send 1 to 1.
%H Christopher Davis and Tommy Occhipinti, <a href="http://curis.ku.dk/ws/files/64393152/simple2.pdf">Which finite simple groups are unit groups?</a>, preprint, J. Pure Appl. Algebra, 218 (2014), no. 4, 743--744. MR3133704.
%F Union of {2}, A000668 and A002884.
%Y Cf. A239891, A000668, A002884.
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Apr 03 2014
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