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A139568 Bisection of ultraperfect numbers A139306. 2
32, 8192, 8589934592, 2305843009213693952, 191561942608236107294793378393788647952342390272950272 (list; graph; refs; listen; history; text; internal format)
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 29 07:50 EDT 2020. Contains 334697 sequences. (Running on oeis4.)