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A139296 2^(2p - 1)/2, where p is a Mersenne prime A000668(n). 3
16, 4096, 1152921504606846976, 7237005577332262213973186563042994240829374041602535252466099000494570602496 (list; graph; refs; listen; history; text; internal format)
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

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Last modified March 21 10:13 EDT 2019. Contains 321368 sequences. (Running on oeis4.)