A018120 Powers of fifth root of 3 rounded down.

1, 1, 1, 1, 2, 3, 3, 4, 5, 7, 9, 11, 13, 17, 21, 27, 33, 41, 52, 65, 81, 100, 125, 156, 195, 243, 302, 377, 469, 585, 729, 908, 1131, 1409, 1755, 2187, 2724, 3393, 4227, 5266, 6561, 8173, 10181, 12683, 15800, 19683, 24519, 30544, 38050, 47401, 59049, 73559, 91634, 114152, 142203, 177147

Offset

0,5

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..2000

Mathematica

Table[Floor[(3^(1/5))^n], {n, 0, 50}] (* Vincenzo Librandi, Jun 12 2025 *)

Prog

(Magma) seq := [Floor(3^(n/5)) : n in [0..60]]; seq; // Vincenzo Librandi, Jun 12 2025

Crossrefs

Cf. A005532.

Sequence in context: A115339 A305631 A036019 * A240200 A094979 A065565

Adjacent sequences: A018117 A018118 A018119 * A018121 A018122 A018123

Keyword

nonn

Author

N. J. A. Sloane

Status

approved