login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A181514
For the numbers n in A181498, these are the largest corresponding k such that 2^n+2^k-1 and 2^n+2^k+1 are twin primes.
2
1, 1, 2, 3, 6, 7, 6, 18, 12, 22, 43, 34, 63, 52, 66, 90, 106, 117, 166, 211, 295, 298, 478, 1447, 1339
OFFSET
1,3
COMMENTS
The sequence of the *smallest* corresponding k starts to differ at index 13 (where it is 59, not 63). - R. J. Mathar, Jan 30 2011
CROSSREFS
Cf. A181498.
Sequence in context: A234025 A245444 A088573 * A225755 A126388 A039247
KEYWORD
nonn,more
AUTHOR
Pierre CAMI, Jan 29 2011
STATUS
approved