A089828 Number of subsets of {1,.., n} containing at least one twin prime pair.

0, 0, 0, 0, 8, 16, 48, 96, 192, 384, 768, 1536, 4352, 8704, 17408, 34816, 69632, 139264, 339968, 679936, 1359872, 2719744, 5439488, 10878976, 21757952, 43515904, 87031808, 174063616, 348127232, 696254464, 1581252608

Offset: 1

Author

Reinhard Zumkeller, Nov 12 2003

Keywords

• nonn

Comments

a(n) = A000079(n)-A089827(n).

Crossrefs

Cf. A071538, A001359, A006512.