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A139238 First differences of Mersenne numbers A001348. 4
4, 24, 96, 1920, 6144, 122880, 393216, 7864320, 528482304 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

a(n) = A001348(n+1) - A001348(n).

EXAMPLE

a(2)=24 because A001348(2)=7 and A001348(2+1)=31 then 31-7 = 24.

CROSSREFS

Cf. A001348, A139228, A139231, A139234, A139239, A139240, A139241, A139242, A139243.

Sequence in context: A091143 A119920 A100738 * A139231 A052462 A048806

Adjacent sequences:  A139235 A139236 A139237 * A139239 A139240 A139241

KEYWORD

easy,nonn

AUTHOR

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

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Last modified February 16 16:00 EST 2012. Contains 205938 sequences.