A175961 n-th nonprime number appears n-th nonprime numbers times.

1, 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, 10, 10, 10, 10, 10, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15

Offset: 1

Author

Juri-Stepan Gerasimov, Oct 31 2010

Keywords

• nonn
• easy
• less

Comments

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

Crossrefs

Cf. A063905, A141468, A175944.

Formula

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