%I #8 Mar 08 2015 20:02:24
%S 2,3,2,3,4,5,5,6,7,8,9,10,10,11,12,13,14,15,16,17,17,18,19,20,21,22,
%T 23,24,25,26,26,27,28,29,30,31,32,33,34,35,36,37,37,38,39,40,41,42,43,
%U 44,45,46,47,48,49,50,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,65
%N a(n) = smallest integer m not equal to n such that n = (floor(n^2/m) + m)/2.
%C This sequence complements A000037. - _Alexander R. Povolotsky_, Feb 10 2008
%H Joshua Zucker, Feb 23 2008, <a href="/A134986/b134986.txt">Table of n, a(n) for n = 1..200</a>
%e a(1)=2 because (floor(1/2) + 2)/2 = 1.
%e a(2)=3 because (floor(4/3) + 3)/2 = 2.
%e a(3)=2 because (floor(9/2) + 2)/2 = 3.
%e a(4)=3 because (floor(16/3)+ 3))/2 = 4.
%e a(5)=4 because (floor(25/4)+ 4))/2 = 5.
%e a(6)=5 because (floor(36/5)+ 5))/2 = 6.
%e a(7)=5 because (floor(49/5)+ 5))/2 = 7.
%K nonn
%O 1,1
%A _Alexander R. Povolotsky_, Feb 05 2008; corrected Feb 07 2008 at the suggestion of _Carl R. White_
%E More terms from _Joshua Zucker_, Feb 23 2008