A134360 Primes dividing terms of A128358.

17, 20231, 83233, 3828719, 8519143, 39951841, 68916943, 76672279, 144326023, 721630111, 35915273857, 39392517233, 42845049953, 83709099119

Offset

1,1

Comments

A prime p is in this sequence if the multiplicative order of 18 modulo p equals the product of smaller primes from this sequence. - Max Alekseyev, Sep 24 2009

Links

Table of n, a(n) for n=1..14.

Example

A128358 begins with {1, 17, 17^2, 17^3, 17^4, 17^5, 20231*17^2, 83233*17^2, ...}. Thus 17, 20231, 83233 are in this sequence.

Crossrefs

Cf. A128356, A128357, A128358.

Sequence in context: A308571 A283719 A355465 * A171687 A178050 A110915

Adjacent sequences: A134357 A134358 A134359 * A134361 A134362 A134363

Keyword

nonn,hard,more

Author

Alexander Adamchuk, Jan 31 2008

Extensions

Edited and extended by Max Alekseyev, Jul 28 2009

a(11)-a(14) from Max Alekseyev, May 26 2010

Status

approved