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A018158 Powers of fifth root of 15 rounded up. 1
1, 2, 3, 6, 9, 15, 26, 45, 77, 131, 225, 387, 665, 1143, 1964, 3375, 5801, 9971, 17137, 29455, 50625, 87013, 149556, 257052, 441813, 759375, 1305193, 2243329, 3855770, 6627189, 11390625, 19577887, 33649922 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..32.

FORMULA

a(n) = ceiling(15^(n/5)). - Wesley Ivan Hurt, Dec 28 2013

MAPLE

A018158:=n->ceil(15^(n/5)); seq(A018158(n), n=0..50); # Wesley Ivan Hurt, Dec 28 2013

MATHEMATICA

Table[Ceiling[15^(n/5)], {n, 0, 50}] (* Wesley Ivan Hurt, Dec 28 2013 *)

CROSSREFS

Sequence in context: A192671 A080239 A114323 * A057928 A026735 A006868

Adjacent sequences:  A018155 A018156 A018157 * A018159 A018160 A018161

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified October 31 08:12 EDT 2014. Contains 248845 sequences.