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A139568
Bisection of ultraperfect numbers
A139306
.
2
32, 8192, 8589934592, 2305843009213693952, 191561942608236107294793378393788647952342390272950272
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OFFSET
1,1
LINKS
Jinyuan Wang,
Table of n, a(n) for n = 1..7
FORMULA
a(n) =
A139306
(2*n). -
Jinyuan Wang
, Mar 14 2020
CROSSREFS
Cf.
A099057
,
A099058
,
A139306
,
A139563
,
A139564
,
A139567
.
Sequence in context:
A086752
A248001
A159679
*
A139294
A227603
A327130
Adjacent sequences:
A139565
A139566
A139567
*
A139569
A139570
A139571
KEYWORD
nonn
AUTHOR
Omar E. Pol
, May 08 2008
STATUS
approved
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Last modified May 9 09:10 EDT 2024. Contains 372347 sequences. (Running on oeis4.)