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A139241 Second differences of Mersenne numbers A001348. +0
4
20, 72, 1824, 4224, 116736, 270336, 7471104, 520617984 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Cf. A001348, A139230, A139232, A139236, A139238, A139242, A139243.

Adjacent sequences: A139238 A139239 A139240 this_sequence A139242 A139243 A139244

Sequence in context: A052516 A083873 A143854 this_sequence A139232 A002292 A010008

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Apr 19 2008

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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