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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
OFFSET
0,2
LINKS
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
KEYWORD
nonn
EXTENSIONS
More terms from Vincenzo Librandi, Jan 07 2014
STATUS
approved