A176062 Numbers n such that 41#*2^n-1 and 41#*2^n+1 are twin primes, where # denotes the primorial, A002110.

9, 12, 16, 32, 290

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: A084375 A373267 A076674 * A027571 A342757 A154631

Adjacent sequences: A176059 A176060 A176061 * A176063 A176064 A176065

Keyword

nonn,more

Author

Pierre CAMI, Dec 06 2010

Status

approved