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A018018 Powers of cube root of 15 rounded down. 21
1, 2, 6, 15, 36, 91, 225, 554, 1368, 3375, 8323, 20527, 50625, 124851, 307911, 759375, 1872779, 4618672, 11390625, 28091696, 69280082, 170859375, 421375453, 1039201231, 2562890625, 6320631804, 15588018473, 38443359375, 94809477068, 233820277107 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

MATHEMATICA

Table[Floor[15^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 06 2014 *)

Floor[Surd[15, 3]^Range[0, 40]] (* Harvey P. Dale, Jun 21 2017 *)

PROG

(MAGMA) [Floor(15^(n/3)): n in [0..40]]; // Vincenzo Librandi, Jan 06 2014

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), this sequence (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: A215149 A017923 A238830 * A030009 A061261 A291414

Adjacent sequences:  A018015 A018016 A018017 * A018019 A018020 A018021

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Jan 06 2014

STATUS

approved

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Last modified August 21 08:34 EDT 2019. Contains 326162 sequences. (Running on oeis4.)