A088267 Smallest number that on prefixing with the n-th term of A088265 yields prime.

2, 1, 3, 4, 5, 1, 5, 1, 2, 1, 6, 9, 18, 9, 5, 4, 2, 7, 3, 1, 6, 3, 11, 9, 20, 6, 32, 16, 11, 13, 11, 1, 6, 15, 6, 21, 18, 1, 5, 13, 14, 1, 6, 18, 15, 9, 12, 3, 50, 19, 56, 12, 9, 3, 5, 66, 27, 1, 8, 24, 11, 9, 11, 13, 24, 79, 3, 43, 26, 19, 11, 4, 39, 3, 45, 9, 11, 6, 6, 15, 2, 1, 41, 18, 5, 19

Offset

0,1

Links

Table of n, a(n) for n=0..85.

Example

a(13) = 18 as A088265(13) = 10001 and 1810001 is a prime while 110001, 210001 to 1710001 are all composite.

Crossrefs

Cf. A088265, A088267.

Sequence in context: A331747 A375776 A285107 * A364577 A286449 A318310

Adjacent sequences: A088264 A088265 A088266 * A088268 A088269 A088270

Keyword

base,nonn

Author

Amarnath Murthy, Sep 28 2003

Extensions

More terms from David Wasserman, Jul 28 2005

Status

approved