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Search: id:A129780
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| A129780 |
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The prime(n)-th lower twin prime. |
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+0
1
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| 5, 11, 29, 59, 137, 179, 239, 281, 431, 641, 809, 1031, 1151, 1277, 1427, 1667, 1931, 1997, 2141, 2339, 2549, 2789, 3119, 3359, 3581, 3851, 3929, 4091, 4157, 4259, 5009, 5279, 5639, 5657, 6359, 6551, 6779, 7127, 7349, 7757, 8231, 8387, 9011, 9239, 9431
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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Prime(n) = the n-th prime number.
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EXAMPLE
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The first prime is 2. The 2nd lower twin prime is 5, which gives the first entry.
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PROGRAM
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(PARI) g(n) = for(x=1, n, y=twinl(prime(x)); print1(y", ")) twinl(n) = { local(c, x); c=0; x=1; while(c<n, if(isprime(prime(x)+2), c++); x++; ); return(prime(x-1)) }
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CROSSREFS
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Adjacent sequences: A129777 A129778 A129779 this_sequence A129781 A129782 A129783
Sequence in context: A030080 A046141 A107135 this_sequence A106060 A059508 A084817
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KEYWORD
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easy,nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)hotmail.com), May 17 2007
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