A017994 - OEIS

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

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OFFSET

0,3

LINKS

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

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 *)

PROG

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

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).

Sequence in context: A341579 A336726 A201081 * A218199 A275788 A169914

Adjacent sequences: A017991 A017992 A017993 * A017995 A017996 A017997

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Vincenzo Librandi, Jan 06 2014

STATUS

approved