A088088 a(1) = 1, a(n) = smallest multiple of a(n-1) such that every partial concatenation (n >1) is a prime.

1, 1, 3, 21, 147, 1029, 103929, 311787, 311787, 311787, 4053231, 28372617, 1447003467, 44857107477, 134571322431, 39967682762007, 5155831076298903, 3542055949417346361, 456925217474837680569, 216125627865598222909137

Offset

0,3

Links

Table of n, a(n) for n=0..19.

Example

11,113,11321, etc. are primes.

Crossrefs

Cf. A088089.

Sequence in context: A323203 A372943 A169634 * A206638 A357652 A037761

Adjacent sequences: A088085 A088086 A088087 * A088089 A088090 A088091

Keyword

base,nonn

Author

Amarnath Murthy, Sep 23 2003

Extensions

More terms from David Wasserman, Jul 14 2005

Status

approved