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%I #7 Aug 29 2015 04:12:47
%S 4,7,13,97,719725
%N Bisection A140468(2n+1).
%H Joshua Cooper, Mark Walters, <a href="http://arxiv.org/abs/0807.1549">Iterated point-line configurations grow doubly-exponentially</a>, Discrete Comput. Geom. 43 (2010), no. 3, 554-562. MR2587837 (2011f:51016) 51M04 (52C35).
%Y Cf. A140468, A243708.
%K nonn,more
%O 0,1
%A _N. J. A. Sloane_ and _Doron Zeilberger_, Jun 17 2014