A018140 Powers of the fifth root of 9 rounded up.

1, 2, 3, 4, 6, 9, 14, 22, 34, 53, 81, 126, 196, 303, 470, 729, 1132, 1756, 2725, 4228, 6561, 10182, 15801, 24520, 38051, 59049, 91635, 142204, 220678, 342458, 531441, 824715, 1279830, 1986098, 3082117, 4782969

Offset

0,2

Links

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Formula

a(n) = ceiling(9^(n/5)). - Wesley Ivan Hurt, Sep 03 2022

Mathematica

Ceiling[(9^(1/5))^Range[0, 40]] (* Harvey P. Dale, Jun 04 2012 *)

Crossrefs

Sequence in context: A058355 A179041 A099558 * A256969 A005579 A000381

Adjacent sequences: A018137 A018138 A018139 * A018141 A018142 A018143

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved