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A139297
2^(2p - 1)/2-1, where p is a Mersenne prime
A000668
(n).
3
15, 4095, 1152921504606846975
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..3.
FORMULA
a(n) = 2^(2*
A000668
(n)-1)/2-1 =
A139296
(n)-1.
CROSSREFS
Sequence in context:
A198524
A208463
A172322
*
A211251
A208469
A070907
Adjacent sequences:
A139294
A139295
A139296
*
A139298
A139299
A139300
KEYWORD
bref
,
nonn
AUTHOR
Omar E. Pol
, Apr 13 2008
STATUS
approved
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Last modified May 13 15:16 EDT 2024. Contains 372520 sequences. (Running on oeis4.)