A017989 Powers of cube root of 5 rounded to nearest integer.

1, 2, 3, 5, 9, 15, 25, 43, 73, 125, 214, 366, 625, 1069, 1828, 3125, 5344, 9138, 15625, 26718, 45688, 78125, 133592, 228439, 390625, 667959, 1142194, 1953125, 3339797, 5710972, 9765625, 16698984, 28554861, 48828125, 83494919, 142774304, 244140625, 417474596

Offset

0,2

Links

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

Mathematica

Table[Round[5^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 07 2014 *)
Round[Surd[5, 3]^Range[0, 40]] (* Harvey P. Dale, Mar 24 2018 *)

Prog

(Magma) [Round(5^(n/3)): n in [0..50]]; // Vincenzo Librandi, Jan 07 2014

Crossrefs

Cf. powers of cube root of k rounded up: A017980 (k=2), A017983 (k=3), A017986 (k=4), this sequence (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: A200047 A147877 A003476 * A017990 A228646 A005517

Adjacent sequences: A017986 A017987 A017988 * A017990 A017991 A017992

Keyword

nonn

Author

N. J. A. Sloane.

Extensions

More terms from Vincenzo Librandi, Jan 07 2014

Status

approved