

A079013


a(n) = p is the least prime introducing primedifference pattern {d, 2d, 4d, 8d}, where d = 2n, i.e., {p, p+2n, p+2n+4n, p+2n+4n+8n, p+2n+4n+8n+16n}={p, p+2n, p+6n, p+14n, p+30n} are consecutive primes.


3




OFFSET

1,1


LINKS

Table of n, a(n) for n=1..7.


EXAMPLE

n=4: d = 2n = 8, dpattern = {8, 16, 32, 64}, a(6)=18365693, first corresponding prime 5tuplet is {18365693, 18365701, 18365717, 18365729, 18365793}.


CROSSREFS

Cf. A079011, A079012.
Sequence in context: A279661 A288846 A289454 * A186865 A038728 A002520
Adjacent sequences: A079010 A079011 A079012 * A079014 A079015 A079016


KEYWORD

nonn


AUTHOR

Labos Elemer, Jan 21 2003


STATUS

approved



