1,1

The primes must contain at least two digits.

Table of n, a(n) for n=1..54.

The composite number 752 is obtained from the prime 257 by interchanging the first and last digits.

The corresponding primes are A076056. Cf. A002808, A179826.

Sequence in context: A284439 A119656 A339141 * A259085 A033411 A329915

Adjacent sequences: A180003 A180004 A180005 * A180007 A180008 A180009

nonn,base

Parthasarathy Nambi, Aug 06 2010

More terms from Vincenzo Librandi, Aug 06 2010

approved