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Search: id:A107685
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| A107685 |
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Swap the order of primes in twin prime pairs. Also, from 5th term (which is 7) on, the primes of A107323. |
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+0
1
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| 2, 3, 5, 3, 7, 5, 13, 11, 19, 17, 31, 29, 43, 41, 61, 59, 73, 71, 103, 101, 109, 107, 139, 137, 151, 149, 181, 179, 193, 191, 199, 197, 229, 227, 241, 239, 271, 269, 283, 281, 313, 311, 349, 347, 421, 419, 433, 431, 463, 461, 523, 521, 571, 569, 601, 599, 619
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Included here as a twin prime pair is (2,3).
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LINKS
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Leroy Quet, Home Page (listed in lieu of email address)
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MAPLE
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c:=0: for n from 3 to 1000 do if isprime(n)=true and isprime(n+2)=true then c:=c+2: a[c-1]:=n+2: a[c]:=n: fi od: 2, 3, seq(a[n], n=1..c); (Deutsch)
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CROSSREFS
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Cf. A107323, A107472.
Sequence in context: A117369 A117366 A073482 this_sequence A161984 A072987 A125677
Adjacent sequences: A107682 A107683 A107684 this_sequence A107686 A107687 A107688
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KEYWORD
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nonn
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AUTHOR
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Leroy Quet Jun 16 2005
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 19 2005
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