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%I #4 Mar 30 2012 18:57:12
%S 1,2,3,4,6,7,8,9,10,12,13,14,15,16,17,19,20,21,22,23,24,25,27,28,29,
%T 30,31,32,33,34,36,37,38,39,40,41,42,43,44,46,47,48,49,50,51,52,53,54,
%U 55,57,58,59,60,61,62,63,64,65,66,67,69,70,71,72,73,74,75,76,77,78,79,80,82,83,84,85,86,87,88,89
%N Complement of A056000.
%F (See the Mathematica code.)
%t a=1/2; b=9/2;
%t F[n_]:=a*n^2+b*n;
%t R[n_]:=(n/a+((b-1)/(2a))^2)^(1/2);
%t G[n_]:=n-1+Ceiling[R[n]-(b-1)/(2a)];
%t Table[F[n], {n,60}]
%t Table[G[n], {n,100}]
%Y Cf. A056000.
%K nonn
%O 1,2
%A _Clark Kimberling_, Jan 03 2011
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