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A139568 Bisection of ultraperfect numbers A139306. 2

%I

%S 32,8192,8589934592,2305843009213693952,

%T 191561942608236107294793378393788647952342390272950272

%N Bisection of ultraperfect numbers A139306.

%H Jinyuan Wang, <a href="/A139568/b139568.txt">Table of n, a(n) for n = 1..7</a>

%F a(n) = A139306(2*n). - _Jinyuan Wang_, Mar 14 2020

%Y Cf. A099057, A099058, A139306, A139563, A139564, A139567.

%K nonn

%O 1,1

%A _Omar E. Pol_, May 08 2008

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Last modified July 10 15:45 EDT 2020. Contains 335577 sequences. (Running on oeis4.)