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n-th composite number appears n-th composite number times.
5

%I #14 Feb 24 2023 11:54:17

%S 4,4,4,4,6,6,6,6,6,6,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,9,10,10,10,10,10,

%T 10,10,10,10,10,12,12,12,12,12,12,12,12,12,12,12,12,14,14,14,14,14,14,

%U 14,14,14,14,14,14,14,14,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15

%N n-th composite number appears n-th composite number times.

%C A002808(n) appears A002808(n) times.

%Y Cf. A002808, A111653, A111654.

%K easy,nonn,less

%O 1,1

%A _Jonathan Vos Post_, Aug 12 2005