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Position of n-th 4 in A031298.
0

%I #4 Mar 30 2012 18:56:21

%S 4,18,38,58,71,73,75,77,78,79,81,83,85,87,89,98,118,138,158,178,202,

%T 232,262,292,311,314,317,320,322,323,326,329,332,335,338,352,382,412,

%U 442,472,502,532,562,592,611,614,617,620,622,623

%N Position of n-th 4 in A031298.

%K nonn

%O 1,1

%A _Clark Kimberling_