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A018034 Powers of cube root of 20 rounded to nearest integer. 22
1, 3, 7, 20, 54, 147, 400, 1086, 2947, 8000, 21715, 58945, 160000, 434307, 1178890, 3200000, 8686136, 23577802, 64000000, 173722727, 471556032, 1280000000, 3474454549, 9431120637, 25600000000, 69489090985, 188622412730, 512000000000, 1389781819697 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
MATHEMATICA
Table[Round[20^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 08 2014 *)
Table[Round[Surd[20, 3]^n], {n, 0, 40}] (* Harvey P. Dale, Sep 10 2021 *)
PROG
(Magma) [Round(20^(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), A018028 (k=18), A018031 (k=19), this sequence (k=20), A018037 (k=21), A018040 (k=22), A018043 (k=23), A018046 (k=24).
Sequence in context: A003097 A109220 A293734 * A293735 A293736 A293737
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Vincenzo Librandi, Jan 08 2014
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)