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A089828 Number of subsets of {1,.., n} containing at least one twin prime pair. 2
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,5
COMMENTS
a(n) = A000079(n)-A089827(n).
LINKS
CROSSREFS
Sequence in context: A245419 A266159 A022444 * A297619 A188825 A214204
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Nov 12 2003
STATUS
approved

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Last modified April 17 02:20 EDT 2024. Contains 371756 sequences. (Running on oeis4.)