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%I #20 Sep 08 2022 08:44:44
%S 1,2,3,4,6,10,16,25,40,64,102,161,256,406,645,1024,1625,2580,4096,
%T 6502,10321,16384,26008,41285,65536,104032,165140,262144,416128,
%U 660561,1048576,1664511,2642246,4194304,6658043,10568984,16777216,26632170,42275935
%N Powers of cube root of 4 rounded to nearest integer.
%H Vincenzo Librandi, <a href="/A017986/b017986.txt">Table of n, a(n) for n = 0..200</a>
%t Table[Round[4^(n/3)], {n, 0, 40}] (* _Vincenzo Librandi_, Jan 07 2014 *)
%t Round[Surd[4,3]^Range[0,40]] (* _Harvey P. Dale_, Jan 02 2017 *)
%o (Magma) [Round(4^(n/3)): n in [0..50]]; // _Vincenzo Librandi_, Jan 07 2014
%o (PARI) vector(50, n, n--; round(4^(n/3))) \\ _Altug Alkan_, Nov 25 2015
%Y Cf. powers of cube root of k rounded up: A017980 (k=2), A017983 (k=3), this sequence (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), A018034 (k=20), A018037 (k=21), A018040 (k=22), A018043 (k=23), A018046 (k=24).
%K nonn
%O 0,2
%A _N. J. A. Sloane_
%E More terms from _Vincenzo Librandi_, Jan 07 2014
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