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A139235
First differences of even superperfect numbers A061652, divided by 2.
11
1, 6, 24, 2016, 30720, 98304, 536739840, 576460751766552576, 154742504334211782058967040, 40564664464798430175360140181504, 42535255300298100629580978034468454400
OFFSET
1,2
COMMENTS
First differences of Mersenne primes A000668, divided by 4 (see A139231).
Also, first differences of superperfect numbers A019279, divided by 2, if there are no odd superperfect numbers.
LINKS
FORMULA
a(n) = A139234(n)/2.
MATHEMATICA
Differences[2^MersennePrimeExponent[Range[14]]-1]/4 (* Paolo Xausa, Oct 20 2023 *)
KEYWORD
nonn
AUTHOR
Omar E. Pol, Apr 18 2008
EXTENSIONS
a(8)-a(11) from Jinyuan Wang, Mar 04 2020
STATUS
approved