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A139568
Bisection of ultraperfect numbers A139306.
2
32, 8192, 8589934592, 2305843009213693952, 191561942608236107294793378393788647952342390272950272
OFFSET
1,1
LINKS
FORMULA
a(n) = A139306(2*n). - Jinyuan Wang, Mar 14 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, May 08 2008
STATUS
approved