A018028 Powers of cube root of 18 rounded to nearest integer.

1, 3, 7, 18, 47, 124, 324, 849, 2225, 5832, 15284, 40056, 104976, 275115, 721005, 1889568, 4952069, 12978092, 34012224, 89137243, 233605663, 612220032, 1604470380, 4204901941, 11019960576, 28880466844, 75688234942, 198359290368, 519848403193, 1362388228962

Offset

0,2

Links

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

Mathematica

Table[Round[18^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 08 2014 *)
Round[Surd[18, 3]^Range[0, 40]] (* Harvey P. Dale, Nov 24 2017 *)

Prog

(Magma) [Round(18^(n/3)): n in [0..40]]; // Vincenzo Librandi, Jan 08 2014

Crossrefs

Cf. powers of cube root of k rounded up: A017980 (k=2), A017983 (k=3), A017986 (k=4), A017989 (k=5), A017992 (k=6), A017995 (k=7), A018001 (k=9), A018004 (k=10), A018007 (k=11), A018010 (k=12), A018013 (k=13), A018016 (k=14), A018019 (k=15), A018022 (k=16), A018025 (k=17), this sequence (k=18), A018031 (k=19), A018034 (k=20), A018037 (k=21), A018040 (k=22), A018043 (k=23), A018046 (k=24).

Sequence in context: A027971 A219233 A211276 * A045994 A101308 A279482

Adjacent sequences: A018025 A018026 A018027 * A018029 A018030 A018031

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Vincenzo Librandi, Jan 08 2014

Status

approved