A228486 - OEIS

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A228486

Near primorial primes: primes p such that p+1 or p-1 is a primorial number (A002110).

2, 3, 5, 7, 29, 31, 211, 2309, 2311, 30029, 200560490131, 304250263527209, 23768741896345550770650537601358309

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OFFSET

1,1

COMMENTS

The next few terms are too large to add: 317#-1, 337#-1, 379#+1, 991#-1. - Charles R Greathouse IV, Sep 12 2013

LINKS

Table of n, a(n) for n=1..13.

Physicsforums, comment defining this sequence.

FORMULA

A057705 UNION {primes p such that p-1 is a primorial number} = {primes p such that p+1 is a primorial number (A002110)} UNION {primes p such that p-1 is a primorial number}.

CROSSREFS

Cf. A000040, A002110, A057705, A228485.

Sequence in context: A273726 A211660 A215155 * A117135 A332582 A019372

Adjacent sequences: A228483 A228484 A228485 * A228487 A228488 A228489

KEYWORD

nonn

AUTHOR

Jonathan Vos Post, Aug 22 2013

EXTENSIONS

a(1)-a(2), a(7), a(11) inserted by Charles R Greathouse IV, Sep 12 2013

STATUS

approved