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A137781 a(n) = (2^(prime(n)) + 2^(prime(n + 1))) / 2^(prime(1)). 0
3, 10, 40, 544, 2560, 34816, 163840, 2228224, 136314880, 671088640, 34896609280, 584115552256, 2748779069440, 37383395344384, 2286984185774080, 146366987889541120, 720575940379279360, 37469948899722526720 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

PROG

(PARI)

CROSSREFS

Cf. A137389.

Sequence in context: A030891 A030911 A009374 * A163843 A149056 A149057

Adjacent sequences:  A137778 A137779 A137780 * A137782 A137783 A137784

KEYWORD

nonn

AUTHOR

Alexander R. Povolotsky (pevnev(AT)juno.com), Apr 28 2008

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Last modified February 14 03:37 EST 2012. Contains 205570 sequences.