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A014015 Denominators of sign-alternating Egyptian fraction expansion of e-2. 3
1, 3, 19, 983, 1140455, 25739184407616, 687786653376698575362597850, 531547061991816754123214108000546228669815660470108834 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

The greedy alternating Egyptian fraction for e-2 must begin with 1/1 as the (-1)^0 term. - Greg Huber, May 17 2018

a(n) >= a(n-1)^2 + a(n-1) for n >= 1, so the ratio log(a(n))/2^n is strictly increasing. But does it approach a limit? Conjecture: lim_{n->inf} log(a(n))/2^n = 0.9748... - Jon E. Schoenfield, Jun 22 2018

LINKS

Greg Huber, Table of n, a(n) for n = 0..8

Index entries for sequences related to Egyptian fractions

CROSSREFS

Sequence in context: A107706 A168591 A319190 * A114301 A258669 A192340

Adjacent sequences:  A014012 A014013 A014014 * A014016 A014017 A014018

KEYWORD

nonn

AUTHOR

Simon Plouffe

EXTENSIONS

Initial 2 removed, offset corrected and Name clarified by Greg Huber, May 17 2018

STATUS

approved

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Last modified July 17 18:47 EDT 2019. Contains 325109 sequences. (Running on oeis4.)