

A139296


2^(2p  1)/2, where p is a Mersenne prime A000668(n).


3




OFFSET

1,1


COMMENTS

a(5) has 4931 digits and is too large to include.  R. J. Mathar, May 30 2008


LINKS

Table of n, a(n) for n=1..4.


FORMULA

a(n) = 2^(2*A000668(n)1)/2.


CROSSREFS

Cf. A000668, A139286, A139294, A139295, A139297, A139298, A139299, A139300, A139301, A139302, A139303, A139304, A139305, A139306.
Sequence in context: A053863 A053765 A193134 * A268757 A272358 A176369
Adjacent sequences: A139293 A139294 A139295 * A139297 A139298 A139299


KEYWORD

bref,nonn


AUTHOR

Omar E. Pol, Apr 13 2008


EXTENSIONS

One more term from R. J. Mathar, May 30 2008


STATUS

approved



