A018123 Powers of fifth root of 4 rounded down.

1, 1, 1, 2, 3, 4, 5, 6, 9, 12, 16, 21, 27, 36, 48, 64, 84, 111, 147, 194, 256, 337, 445, 588, 776, 1024, 1351, 1782, 2352, 3104, 4096, 5404, 7131, 9410, 12416, 16384, 21618, 28526, 37640, 49667, 65536, 86475, 114104, 150562, 198668, 262144, 345901, 456419, 602248, 794672, 1048576

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Links

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

Crossrefs

Cf. A005533.

Programs

Magma

seq := [Floor(4^(n/5)) : n in [0..50]]; seq; // Vincenzo Librandi, Jun 11 2025

Maple

a:= n-> floor(4^(n/5)):
seq(a(n), n=0..50);  # Alois P. Heinz, Jun 11 2025

Mathematica

Table[Floor[(4^(1/5))^n],{n,0,35}] (* Vincenzo Librandi, Jun 11 2025 *)