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A147797
The 10^n-th twin prime, A001097(10^n).
1
3, 41, 1607, 32441, 557729, 8265137, 115438691, 1523976761, 19358094101, 239211161009, 2891512532927, 34338035342339, 401888325140039, 4646528385435887
OFFSET
0,1
COMMENTS
Since A001097(2)=5 is the only number to be member of two twin prime pairs, all terms of this sequence are lower twin primes A001359(k), k = 1,6,51,501,5001,..., cf. the given formula.
FORMULA
a(n) = A001359([10^n/2]+1)
CROSSREFS
Cf. A146214.
Sequence in context: A012147 A012011 A277453 * A139161 A262644 A238990
KEYWORD
more,nonn
AUTHOR
M. F. Hasler, Dec 06 2008
EXTENSIONS
a(6)-a(13) from Donovan Johnson, Dec 18 2009
STATUS
approved