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A017993
Powers of cube root of 6 rounded up.
21
1, 2, 4, 6, 11, 20, 36, 66, 119, 216, 393, 714, 1296, 2355, 4280, 7776, 14130, 25676, 46656, 84780, 154055, 279936, 508678, 924329, 1679616, 3052065, 5545970, 10077696, 18312389, 33275820, 60466176, 109874334, 199654915, 362797056, 659246002
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OFFSET
0,2
LINKS
Vincenzo Librandi,
Table of n, a(n) for n = 0..200
MATHEMATICA
Table[Ceiling[6^(n/3)], {n, 0, 40}] (*
Vincenzo Librandi
, Jan 09 2014 *)
PROG
(Magma) [Ceiling(6^(n/3)): n in [0..50]]; //
Vincenzo Librandi
, Jan 09 2014
CROSSREFS
Cf. powers of cube root of k ceiling up:
A017981
(k=2),
A017984
(k=3),
A017987
(k=4),
A017990
(k=5), this sequence (k=6),
A017996
(k=7),
A018002
(k=9),
A018005
(k=10),
A018008
(k=11),
A018011
(k=12),
A018014
(k=13),
A018017
(k=14),
A018020
(k=15),
A018023
(k=16),
A018026
(k=17),
A018029
(k=18),
A018032
(k=19),
A018035
(k=20),
A018038
(k=21),
A018041
(k=22),
A018044
(k=23),
A018047
(k=24).
Sequence in context:
A254532
A199926
A068330
*
A049870
A093970
A333098
Adjacent sequences:
A017990
A017991
A017992
*
A017994
A017995
A017996
KEYWORD
nonn
AUTHOR
N. J. A. Sloane
EXTENSIONS
More terms from
Vincenzo Librandi
, Jan 09 2014
STATUS
approved
