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A017986
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Powers of cube root of 4 rounded to nearest integer.
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22
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1, 2, 3, 4, 6, 10, 16, 25, 40, 64, 102, 161, 256, 406, 645, 1024, 1625, 2580, 4096, 6502, 10321, 16384, 26008, 41285, 65536, 104032, 165140, 262144, 416128, 660561, 1048576, 1664511, 2642246, 4194304, 6658043, 10568984, 16777216, 26632170, 42275935
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OFFSET
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0,2
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 0..200
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MATHEMATICA
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Table[Round[4^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 07 2014 *)
Round[Surd[4, 3]^Range[0, 40]] (* Harvey P. Dale, Jan 02 2017 *)
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PROG
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(Magma) [Round(4^(n/3)): n in [0..50]]; // Vincenzo Librandi, Jan 07 2014
(PARI) vector(50, n, n--; round(4^(n/3))) \\ Altug Alkan, Nov 25 2015
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CROSSREFS
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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).
Sequence in context: A024965 A018142 A173697 * A343304 A346075 A352946
Adjacent sequences: A017983 A017984 A017985 * A017987 A017988 A017989
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane
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EXTENSIONS
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More terms from Vincenzo Librandi, Jan 07 2014
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STATUS
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approved
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