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A229500
Smaller of Fermi-Dirac twin primes (A229064) which are not the smaller of twin primes (A001359).
1
7, 9, 23, 47, 79, 81, 167, 359, 839, 1367, 1847, 2207, 2399, 3719, 5039, 6561, 7919, 10607, 11447, 14639, 16127, 17159, 19319, 28559, 29927, 36479, 44519, 49727, 54287, 57119, 66047, 85847, 97967, 113567, 128879, 177239, 196247, 201599, 218087, 241079, 273527
OFFSET
1,1
COMMENTS
The sequence conjecturally infinite. All squares of the sequence are 9, 81, 6561,... and have the form 3^(2^k), k>=1. However, we conjecture that there is only a finite number of them, or, the same, there is only a finite number of primes of the form 3^(2^k) + 2.
LINKS
CROSSREFS
Sequence in context: A179788 A319878 A083582 * A303188 A029633 A049301
KEYWORD
nonn
AUTHOR
Vladimir Shevelev, Sep 25 2013
EXTENSIONS
More terms from Peter J. C. Moses, Sep 25 2013
STATUS
approved