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A139303 (2^(2p - 1)/16)-1, where p is a Mersenne prime A000668(n). 3
1, 511, 144115188075855871 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..3.

FORMULA

a(n) = (2^(2*A000668(n)-1)/16)-1 = (A139294(n)/16)-1.

CROSSREFS

Sequence in context: A069436 A217915 A263167 * A035884 A035596 A095843

Adjacent sequences:  A139300 A139301 A139302 * A139304 A139305 A139306

KEYWORD

bref,nonn

AUTHOR

Omar E. Pol, Apr 13 2008

STATUS

approved

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Last modified February 22 19:56 EST 2019. Contains 320403 sequences. (Running on oeis4.)