id:A087689 - OEIS Search Results

Search: id:A087689

Displaying 1-1 of 1 results found.

page 1

Numerators of successive partial sums of sum(1/(2^n-1)).

+0
2

1, 4, 31, 54, 1709, 15536, 1982837, 33790906, 2469747943, 27183776108, 55662119048981, 241239187192714, 1976140351325516359, 28325754514689966424, 4277270178238249409079, 659561325495450888962794 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`a(3)=31 because 1/1 + 1/3 + 1/7 = 31/21.`
	CROSSREFS	`Cf. A000225, A087690.` `Sequence in context: A025416 A043082 A070522 this_sequence A059938 A005216 A014537` `Adjacent sequences: A087686 A087687 A087688 this_sequence A087690 A087691 A087692`
	KEYWORD	`frac,nonn`
	AUTHOR	`Keenan Pepper (cherylgpepper(AT)comcast.net), Sep 27 2003`
	EXTENSIONS	`More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 26 2003`

page 1

Search completed in 0.002 seconds

Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

AT&T Labs Research