OFFSET
0,1
PROG
(PARI) a(n)=prime(10^n)%10 \\ Charles R Greathouse IV, Dec 29 2012
CROSSREFS
KEYWORD
nonn,base,hard,more
AUTHOR
Cino Hilliard, Jun 21 2004
EXTENSIONS
a(19)-a(24) added from the b-file at A006988 by Amiram Eldar, Mar 24 2021
STATUS
approved