A017994 Powers of cube root of 7 rounded down.

1, 1, 3, 7, 13, 25, 49, 93, 179, 343, 656, 1255, 2401, 4592, 8785, 16807, 32150, 61501, 117649, 225054, 430513, 823543, 1575381, 3013595, 5764801, 11027667, 21095169, 40353607, 77193673, 147666184, 282475249, 540355712, 1033663291, 1977326743, 3782489985

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Links

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

Crossrefs

Cf. powers of cube root of k rounded down: A017979 (k=2), A017982 (k=3), A017985 (k=4), A017988 (k=5), A017991 (k=6), this sequence (k=7), A018000 (k=9), A018003 (k=10), A018006 (k=11), A018009 (k=12), A018012 (k=13), A018015 (k=14), A018018 (k=15), A018021 (k=16), A018024 (k=17), A018027 (k=18), A018030 (k=19), A018033 (k=20), A018036 (k=21), A018039 (k=22), A018042 (k=23), A018045 (k=24).

Programs

Magma

[Floor(7^(n/3)): n in [0..50]]; // Vincenzo Librandi, Jan 06 2014

Mathematica

Table[Floor[7^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 06 2014 *)
Floor[Surd[7,3]^Range[0,40]] (* Harvey P. Dale, Apr 05 2019 *)

Extensions

More terms from Vincenzo Librandi, Jan 06 2014