%I #4 Mar 30 2012 18:56:20
%S 10,28,33,35,37,39,46,64,85,112,132,135,138,139,141,144,166,193,220,
%T 247,255,258,261,264,274,301,328,355,375,378,381,382,384,387,409,436,
%U 443,446,449,452,455,458,461,463,464,467,470,473
%N Position of n-th 4 in A031100.
%K nonn
%O 1,1
%A _Clark Kimberling_
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