A152608 a(1) = 1; thereafter a(n) is always the smallest integer > a(n-1) not leading to a contradiction, such that the concatenation of any three consecutive digits in the sequence is a prime.

1, 2, 7, 19, 37, 39, 71, 91, 93, 733, 739, 773, 971, 977, 3311, 3733, 7331, 7337, 9719, 9773, 31131, 31137, 33113, 73311, 311311, 311313, 733113, 733131, 733137, 971911, 3113113, 7331131, 7331137, 9719113, 9719191, 9719193

Offset

1,2

Comments

Computed by Jean-Marc Falcoz.

Links

Table of n, a(n) for n=1..36.

Eric Angelini, Chiffres consecutifs dans quelques suites

E. Angelini, Chiffres consecutifs dans quelques suites [Cached copy, with permission]

Crossrefs

Cf. A158652, A152604-A152609.

Sequence in context: A232667 A034794 A213892 * A334520 A308269 A038562

Adjacent sequences: A152605 A152606 A152607 * A152609 A152610 A152611

Keyword

nonn,base

Author

N. J. A. Sloane, Sep 23 2009

Status

approved