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A139304 2^(2p - 1)/32, where p is a Mersenne prime A000668(n). 3
1, 256, 72057594037927936 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

FORMULA

a(n) = 2^(2*A000668(n)-1)/32 = A139294(n)/32.

CROSSREFS

Sequence in context: A056668 A087930 A185981 * A018859 A180699 A195529

Adjacent sequences:  A139301 A139302 A139303 * A139305 A139306 A139307

KEYWORD

bref,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Apr 13 2008

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Last modified February 15 03:33 EST 2012. Contains 205694 sequences.