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A181710
Near-perfect numbers (A181595) of the form m*2^p, where m = 2^(p-1)*(2^p-1) is a perfect number (A000396).
2
24, 224, 15872, 1040384, 274844352512, 1125891316908032, 72057456598974464, 4951760154835678090382802944, 6129982163463555430774932117031404988667342368173719552
OFFSET
1,1
LINKS
FORMULA
a(n) = A147538(A000043(n)). - Amiram Eldar, Apr 29 2024
MATHEMATICA
With[{p = MersennePrimeExponent[Range[10]]}, 2^(2*p - 1)*(2^p - 1)] (* Amiram Eldar, Apr 29 2024 *)
CROSSREFS
Subsequence of A181595 and A181702.
Sequence in context: A107968 A269777 A024302 * A201192 A345648 A022684
KEYWORD
nonn
AUTHOR
Vladimir Shevelev, Nov 07 2010
EXTENSIONS
a(6)-a(9) from Amiram Eldar, Apr 29 2024
STATUS
approved