1,1

Table of n, a(n) for n=1..35.

181 is a member as replacing 1 by 10-1 = 9 and 8 by 10-8 =2 gives 929 which is also a prime.

Sequence in context: A128344 A259385 A114366 * A174271 A211678 A082756

Adjacent sequences: A088089 A088090 A088091 * A088093 A088094 A088095

base,nonn

Amarnath Murthy, Sep 23 2003

Corrected and extended by David Wasserman, Jul 18 2005

approved