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A176062 Numbers n such that 41#*2^n-1 and 41#*2^n+1 are twin primes, where # denotes the primorial, A002110. 0
9, 12, 16, 32, 290 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

41# = 304250263527210.

LINKS

Table of n, a(n) for n=1..5.

MATHEMATICA

Select[Range[0, 300], PrimeQ[304250263527210*2^# - 1] && PrimeQ[304250263527210*2^# + 1] &]

CROSSREFS

Cf. A176061.

Sequence in context: A120154 A084375 A076674 * A027571 A154631 A199593

Adjacent sequences:  A176059 A176060 A176061 * A176063 A176064 A176065

KEYWORD

nonn,more

AUTHOR

Pierre CAMI, Dec 06 2010

STATUS

approved

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Last modified October 17 06:08 EDT 2019. Contains 328106 sequences. (Running on oeis4.)