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%I #4 Mar 30 2012 18:56:21
%S 2,10,15,17,19,20,21,23,30,40,53,68,76,79,82,83,85,88,98,113,120,123,
%T 126,128,129,132,135,138,141,143,144,147,150,151,153,154,156,157,158,
%U 159,160,162,163,165,168,171,173,174,177,180
%N Position of n-th 2 in A031219.
%K nonn
%O 1,1
%A _Clark Kimberling_
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