A075601 a(1) = 13 and then the smallest prime that is obtained by placing digits on both sides of the previous term. Or smallest prime that encompasses a(n-1).

13, 2131, 121313, 51213137, 3512131379, 135121313797, 21351213137977, 5213512131379777, 352135121313797771, 63521351213137977713, 16352135121313797771319, 9163521351213137977713193

Offset

1,1

Links

Table of n, a(n) for n=1..12.

Crossrefs

Cf. A075595, A075596, A075597, A075598, A075599, A075600, A075602.

Sequence in context: A197046 A283633 A221823 * A325216 A161588 A221927

Adjacent sequences: A075598 A075599 A075600 * A075602 A075603 A075604

Keyword

base,nonn

Author

Amarnath Murthy, Sep 28 2002

Extensions

Corrected and extended by Sascha Kurz, Jan 23 2003

Status

approved