A017990 - OEIS

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A017990

Powers of cube root of 5 rounded up.

21

1, 2, 3, 5, 9, 15, 25, 43, 74, 125, 214, 366, 625, 1069, 1828, 3125, 5344, 9138, 15625, 26719, 45688, 78125, 133592, 228439, 390625, 667960, 1142195, 1953125, 3339797, 5710973, 9765625, 16698984, 28554861, 48828125, 83494920, 142774304, 244140625

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OFFSET

0,2

LINKS

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

MATHEMATICA

Table[Ceiling[5^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 09 2014 *)

PROG

(Magma) [Ceiling(5^(n/3)): n in [0..50]]; // Vincenzo Librandi, Jan 09 2014

CROSSREFS

Cf. powers of cube root of k ceiling up: A017981 (k=2), A017984 (k=3), A017987 (k=4), this sequence (k=5), A017993 (k=6), A017996 (k=7), A018002 (k=9), A018005 (k=10), A018008 (k=11), A018011 (k=12), A018014 (k=13), A018017 (k=14), A018020 (k=15), A018023 (k=16), A018026 (k=17), A018029 (k=18), A018032 (k=19), A018035 (k=20), A018038 (k=21), A018041 (k=22), A018044 (k=23), A018047 (k=24).

Sequence in context: A147877 A003476 A017989 * A228646 A005517 A034063

Adjacent sequences: A017987 A017988 A017989 * A017991 A017992 A017993

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Vincenzo Librandi, Jan 09 2014

STATUS

approved