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A017986 Powers of cube root of 4 rounded to nearest integer. 22
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

MATHEMATICA

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 *)

PROG

(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

CROSSREFS

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 * A293632 A216783 A026502

Adjacent sequences:  A017983 A017984 A017985 * A017987 A017988 A017989

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Vincenzo Librandi, Jan 07 2014

STATUS

approved

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Last modified November 13 02:59 EST 2019. Contains 329085 sequences. (Running on oeis4.)