A075600 a(1) = 11 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).

11, 1117, 211177, 12111773, 1121117731, 1112111773139, 811121117731399, 18111211177313993, 5181112111773139933, 351811121117731399339, 63518111211177313993399, 11635181112111773139933991

Offset

1,1

Links

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

Crossrefs

Cf. A075595, A075596, A075597, A075598, A075599, A075601, A075602.

Sequence in context: A136308 A343837 A303067 * A078568 A015095 A167118

Adjacent sequences: A075597 A075598 A075599 * A075601 A075602 A075603

Keyword

base,nonn

Author

Amarnath Murthy, Sep 28 2002

Extensions

More terms from Sascha Kurz, Jan 20 2003

Status

approved