[seqfan] similarity in (avoided) upper-twin prime sequences A025584 A156828 A175073

[Richard Mathar]

What is the common ground for these three:

http://research.att.com/~njas/sequences/?q=id:A175073|id:A156828
3,11,17,23,29,37,41,47,53,59,67,71,79,83,89,97,101,107,113,127,131,137,149,157,163,167,173,179,191,197,211,223,227,233,239,251,257,263,269,277,281,293,307,
2,7,11,17,23,29,37,41,47,53,59,67,71,79,83,89,97,101,107,113,127,131,137,149,157,163,167,173,179,191,197,211,223,227,233,239,251,257,263,269,277,281,293,307,311,317,331,337,347,353,359,367,373,379,383,389,

http://research.att.com/~njas/sequences/?q=id:A175073|id:A025584
3,11,17,23,29,37,41,47,53,59,67,71,79,83,89,97,101,107,113,127,131,137,149,157,163,167,173,179,191,197,211,223,227,233,239,251,257,263,269,277,281,293,307,
2,3,11,17,23,29,37,41,47,53,59,67,71,79,83,89,97,101,107,113,127,131,137,149,157,163,167,173,179,191,197,211,223,227,233,239,251,257,263,269,277,281,293,307,311,317,331,337,347,353,359,367,373,379,383,389,397,401,