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A018029
Powers of cube root of 18 rounded up.
21
1, 3, 7, 18, 48, 124, 324, 850, 2226, 5832, 15285, 40056, 104976, 275115, 721006, 1889568, 4952070, 12978093, 34012224, 89137244, 233605664, 612220032, 1604470381, 4204901942, 11019960576, 28880466845, 75688234943, 198359290368, 519848403194
OFFSET
0,2
LINKS
MATHEMATICA
Table[Ceiling[18^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 10 2014 *)
PROG
(Magma) [Ceiling(18^(n/3)): n in [0..40]]; // Vincenzo Librandi, Jan 10 2014
CROSSREFS
Cf. powers of cube root of k ceiling up: A017981 (k=2), A017984 (k=3), A017987 (k=4), A017990 (k=5), A017993 (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), this sequence (k=18), A018032 (k=19), A018035 (k=20), A018038 (k=21), A018041 (k=22), A018044 (k=23), A018047 (k=24).
Sequence in context: A045994 A101308 A279482 * A099483 A225034 A190255
KEYWORD
nonn
EXTENSIONS
More terms from Vincenzo Librandi, Jan 10 2014
STATUS
approved