A132484 Egyptian fraction representation for the cube root of 7.

2, 3, 13, 374, 1024880, 1825497015565, 5518297090035310527030391, 42338367970038285070366947344920414892979877883695, 3408489902013828249463246743444582832793944123960103541079208241885437863449854247676145413113610818

Offset

1,1

Comments

Fractional part of 7^(1/3) = 1/2 + 1/3 + 1/13 + ... Generated with Perl's Math::BigFloat module. Number of digits in terms is as follows: 1, 1, 2, 3, 7, 13, 25, 50, 100, 200, 400, ...

Links

Table of n, a(n) for n=1..9.

Example

Cube root of 7 = 1.9129311827723891011991168395487602828624390503459...

Crossrefs

Sequence in context: A090100 A270314 * A258357 A160858 A062648 A094003

Adjacent sequences: A132481 A132482 A132483 * A132485 A132486 A132487

Keyword

frac,nonn

Author

Jonathan Wellons (wellons(AT)gmail.com), Aug 23 2007

Status

approved