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A248249 Egyptian fraction representation of sqrt(21) (A010477) using a greedy function. 0
4, 2, 13, 177, 344766, 1649432522483, 3009384963228815398356405, 9085726642856091334926418336934724393317743509110, 200625769243543756748406312378876010708020812606355642597458369416042779347013395136132184521789202 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

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

MATHEMATICA

Egyptian[nbr_] := Block[{lst = {IntegerPart[nbr]}, cons = N[ FractionalPart[ nbr], 2^20], denom, iter = 8}, While[ iter > 0, denom = Ceiling[ 1/cons]; AppendTo[ lst, denom]; cons -= 1/denom; iter--]; lst]; Egyptian[ Sqrt[ 21]]

CROSSREFS

Egyptian fraction representations of the square roots: A006487, A224231, A248235-A248322.

Egyptian fraction representations of the cube roots: A129702, A132480-A132574.

Sequence in context: A193849 A064308 A255044 * A161134 A184183 A317738

Adjacent sequences:  A248246 A248247 A248248 * A248250 A248251 A248252

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Oct 04 2014

STATUS

approved

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Last modified November 17 18:24 EST 2019. Contains 329241 sequences. (Running on oeis4.)