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A147797
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The 10^n-th twin prime, A001097(10^n).
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1
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3, 41, 1607, 32441, 557729, 8265137, 115438691, 1523976761, 19358094101, 239211161009, 2891512532927, 34338035342339, 401888325140039, 4646528385435887
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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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.
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FORMULA
| a(n) = A001359([10^n/2]+1)
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CROSSREFS
| Cf. A146214.
Sequence in context: A012104 A012147 A012011 * A139161 A192888 A057013
Adjacent sequences: A147794 A147795 A147796 * A147798 A147799 A147800
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KEYWORD
| more,nonn
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AUTHOR
| M. F. Hasler (www.univ-ag.fr/~mhasler), Dec 06 2008
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EXTENSIONS
| a(6)-a(13) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Dec 18 2009
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