1,2

A018252(n) appears A018252(n) times; 1 appears once, n-th composite number appears n-th composite number times; 1 together with A111655.

Table of n, a(n) for n=1..79.

a(1)=1, a(n+1)=A111655(n).

Cf. A063905, A141468, A175944.

Sequence in context: A179414 A139324 A111655 * A113646 A106325 A159835

Adjacent sequences: A175958 A175959 A175960 * A175962 A175963 A175964

nonn,easy,less

Juri-Stepan Gerasimov, Oct 31 2010

approved