A017988 Powers of cube root of 5 rounded down.

1, 1, 2, 5, 8, 14, 25, 42, 73, 125, 213, 365, 625, 1068, 1827, 3125, 5343, 9137, 15625, 26718, 45687, 78125, 133591, 228438, 390625, 667959, 1142194, 1953125, 3339796, 5710972, 9765625, 16698983, 28554860, 48828125, 83494919, 142774303, 244140625

Offset

0,3

Links

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

Mathematica

Table[Floor[5^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 06 2014 *)
Floor[Surd[5, 3]^Range[0, 40]] (* Harvey P. Dale, Jul 05 2022 *)

Prog

(Magma) [Floor(5^(n/3)): n in [0..50]]; // Vincenzo Librandi, Jan 06 2014

Crossrefs

Cf. powers of cube root of k rounded down: A017979 (k=2), A017982 (k=3), A017985 (k=4), this sequence (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), A018033 (k=20), A018036 (k=21), A018039 (k=22), A018042 (k=23), A018045 (k=24).

Sequence in context: A264395 A139218 A263235 * A282444 A103077 A090980

Adjacent sequences: A017985 A017986 A017987 * A017989 A017990 A017991

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms From Vincenzo Librandi, Jan 06 2014

Status

approved