A018033 Powers of cube root of 20 rounded down.

1, 2, 7, 20, 54, 147, 400, 1085, 2947, 8000, 21715, 58944, 160000, 434306, 1178890, 3200000, 8686136, 23577801, 64000000, 173722727, 471556031, 1280000000, 3474454549, 9431120636, 25600000000, 69489090984, 188622412730, 512000000000, 1389781819696

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..200

Crossrefs

Cf. powers of cube root of k rounded down: A017979 (k=2), A017982 (k=3), A017985 (k=4), A017988 (k=5), A017991 (k=6), A017994 (k=7), A018000 (k=9), A018003 (k=10), A018006 (k=11), A018009 (k=12), A018012 (k=13), A018015 (k=14), A018018 (k=15), A018021 (k=16), A018024 (k=17), A018027 (k=18), A018030 (k=19), this sequence (k=20), A018036 (k=21), A018039 (k=22), A018042 (k=23), A018045 (k=24).

Programs

Magma

[Floor(20^(n/3)): n in [0..40]]; // Vincenzo Librandi, Jan 06 2014

Mathematica

Table[Floor[20^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 06 2014 *)
Floor[CubeRoot[20]^Range[0,30]] (* Harvey P. Dale, Feb 14 2025 *)

Extensions

More terms from Vincenzo Librandi, Jan 06 2014