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%I #3 Oct 04 2015 20:46:54
%S 1,9,-99,-7038,-113643,1547469,112734378,1884830229,-26299018683,
%T -1956243650733,-33464928293199,452674080810576,34841458485708282,
%U 611295716269145124,-7738654169519261871,-626134798894169029653,-11321201939484706804827,129953731916611548222291
%N Bisection of A262539.
%Y Cf. A262539, A262541.
%K sign
%O 0,2
%A _N. J. A. Sloane_, Oct 04 2015