OFFSET
2,6
COMMENTS
LINKS
Stanislav Sykora, Table of n, a(n) for n = 2..5071
Stanislav Sykora, PARI/GP scripts for genetic threads, with code and comments.
EXAMPLE
These are the first rows of the table:
2: 0,
3: 1, 1, 1, 0,
4: 2, 1, 1, 0,
5: 2, 4, 4, 2, 0,
6: 3, 1, 1, 0,
7: 3, 5, 3, 1, 0,
8: 4, 7, 7, 5, 1, 0,
9: 4, 5, 5, 3, 0,
10: 4, 5, 6, 1, 0,
...
Hence, there are 6 right truncatable reversible primes with 3 digits in base 10 (see A238850).
PROG
(PARI) See the link.
CROSSREFS
KEYWORD
nonn,tabf,base
AUTHOR
Stanislav Sykora, Mar 13 2014
STATUS
approved