

A139235


First differences of even superperfect numbers A061652, divided by 2.


10



1, 6, 24, 2016, 30720, 98304, 536739840, 576460751766552576, 154742504334211782058967040, 40564664464798430175360140181504, 42535255300298100629580978034468454400
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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

Table of n, a(n) for n=1..11.


FORMULA

a(n) = A139234(n)/2.


CROSSREFS

Cf. A000668, A019279, A061652, A139228, A139229, A139230, A139231, A139232, A139233, A139234, A139236, A139237.
Sequence in context: A267032 A234635 A036284 * A184388 A136606 A074096
Adjacent sequences: A139232 A139233 A139234 * A139236 A139237 A139238


KEYWORD

nonn


AUTHOR

Omar E. Pol, Apr 18 2008


EXTENSIONS

a(8)a(11) from Jinyuan Wang, Mar 04 2020


STATUS

approved



