A017986 Powers of cube root of 4 rounded to nearest integer.

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

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 * A343304 A346075 A352946

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