A018000 - OEIS

%I #16 Sep 08 2022 08:44:44

%S 1,2,4,9,18,38,81,168,350,729,1516,3154,6561,13647,28387,59049,122826,

%T 255490,531441,1105441,2299411,4782969,9948976,20694704,43046721,

%U 89540787,186252344,387420489,805867091,1676271101,3486784401,7252803826,15086439912

%N Powers of cube root of 9 rounded down.

%H Vincenzo Librandi, <a href="/A018000/b018000.txt">Table of n, a(n) for n = 0..200</a>

%p A018000:=n->floor(9^(n/3)); seq(A018000(n), n=0..50); # _Wesley Ivan Hurt_, Jan 16 2014

%t Table[Floor[9^(n/3)], {n, 0, 40}] (* _Vincenzo Librandi_, Jan 06 2014 *)

%o (Magma) [Floor(9^(n/3)): n in [0..50]]; // _Vincenzo Librandi_, Jan 06 2014

%Y 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), this sequence (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).

%K nonn

%O 0,2

%A _N. J. A. Sloane_

%E More terms from _Vincenzo Librandi_, Jan 06 2014