A018034 Powers of cube root of 20 rounded to nearest integer.
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
Offset: 0
Keywords
Links
- Vincenzo Librandi, Table of n, a(n) for n = 0..200
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).
Programs
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Magma
[Round(20^(n/3)): n in [0..40]]; // Vincenzo Librandi, Jan 08 2014
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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 *)
Extensions
More terms from Vincenzo Librandi, Jan 08 2014