%I #5 Jun 14 2019 00:27:52
%S 3,5,7,8,9,10,11,12,13,14,15,16,17,18,19,20,20,21,22,23,23,24,25,25,
%T 26,27,27,28,29,29,30,31,31,32,33,33,34,34,35,36,36,37,37,38,38,39,40,
%U 40,41,41,42,42,43,43,44,44,45,45,46,46,47,47,48,48,49,49,50,50,51,51,52
%N A102889(n) is at least a(n).
%F a(n) = ceiling(3*n^(2/3)).
%e a(8) = 12 because ceiling(3*8^(2/3)) = ceiling(12) = 12.
%t Table[Ceiling[3*n^(2/3)], {n, 1, 85}]
%Y Cf. A102889.
%K easy,nonn
%O 1,1
%A Joseph Biberstine (jrbibers(AT)indiana.edu), Jan 16 2005
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