A095178 Final digit of the (10^n)-th prime.

2, 9, 1, 9, 9, 9, 3, 3, 3, 9, 3, 7, 3, 1, 7, 7, 9, 9, 1, 9, 7, 3, 9, 3, 3

Offset: 0

Author

Cino Hilliard, Jun 21 2004

Keywords

• nonn
• base
• hard
• more

Crossrefs

Cf. A006988, A010879.

Programs

PARI

a(n)=prime(10^n)%10 \\ Charles R Greathouse IV, Dec 29 2012

Formula

a(n) = A010879(A006988(n)).

Extensions

a(19)-a(24) added from the b-file at A006988 by Amiram Eldar, Mar 24 2021