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A018003 Powers of cube root of 10 rounded down. 21
1, 2, 4, 10, 21, 46, 100, 215, 464, 1000, 2154, 4641, 10000, 21544, 46415, 100000, 215443, 464158, 1000000, 2154434, 4641588, 10000000, 21544346, 46415888, 100000000, 215443469, 464158883, 1000000000, 2154434690, 4641588833, 10000000000, 21544346900 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Also, number of cubes <= 10^n. - Paolo P. Lava, Jun 23 2014

LINKS

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

FORMULA

a(n) = floor( 10^(n/3) ).

MAPLE

A018003:=n->floor(10^(n/3)); seq(A018003(n), n=0..40); # Wesley Ivan Hurt, Jun 23 2014

MATHEMATICA

Table[Floor[10^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 06 2014 *)

PROG

(PARI) a(n) = floor(10^(n/3))

(MAGMA) [Floor(10^(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), A017994 (k=7), A018000 (k=9),this sequence (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: A215533 A128461 A011956 * A255711 A204804 A165136

Adjacent sequences:  A018000 A018001 A018002 * A018004 A018005 A018006

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Vincenzo Librandi, Jan 06 2014

STATUS

approved

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Last modified March 21 22:19 EDT 2019. Contains 321382 sequences. (Running on oeis4.)