

A136351


Primorial numbers p# such that p# + 1 is a prime.


4




OFFSET

1,1


COMMENTS

This sequence is different from A121069 and A002110.
a(7)=A002110(75) has 154 digits and is too long to be listed.  R. J. Mathar, Jul 23 2008


LINKS

Table of n, a(n) for n=1..6.


FORMULA

{A002110(j): A002110(j)+1 in A000040}.  R. J. Mathar, Jul 23 2008


EXAMPLE

a(5)=2310 is followed by prime 2311 whereas 30030 is not followed by a prime.


CROSSREFS

Cf. A136349, A136350, A136352, A002110, A121069.
Sequence in context: A088257 A058694 A046853 * A071290 A185693 A093449
Adjacent sequences: A136348 A136349 A136350 * A136352 A136353 A136354


KEYWORD

easy,nonn


AUTHOR

Enoch Haga, Dec 25 2007


EXTENSIONS

Changed a(1) from 4 to 2 and edited by R. J. Mathar, Jul 23 2008


STATUS

approved



