A107685 Swap the order of primes in twin prime pairs. Also, from 5th term (which is 7) on, the primes of A107323.

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

Offset

1,1

Comments

Included here as a twin prime pair is (2,3).

Links

Table of n, a(n) for n=1..57.

Maple

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); # Emeric Deutsch, Jun 19 2005

Crossrefs

Cf. A107323, A107472.

Sequence in context: A318411 A225680 A346091 * A161984 A337362 A125677

Adjacent sequences: A107682 A107683 A107684 * A107686 A107687 A107688

Keyword

nonn

Author

Leroy Quet, Jun 16 2005

Extensions

More terms from Emeric Deutsch, Jun 19 2005

Status

approved