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%I #11 Sep 08 2022 08:44:44
%S 1,3,7,18,48,124,324,850,2226,5832,15285,40056,104976,275115,721006,
%T 1889568,4952070,12978093,34012224,89137244,233605664,612220032,
%U 1604470381,4204901942,11019960576,28880466845,75688234943,198359290368,519848403194
%N Powers of cube root of 18 rounded up.
%H Vincenzo Librandi, <a href="/A018029/b018029.txt">Table of n, a(n) for n = 0..200</a>
%t Table[Ceiling[18^(n/3)], {n, 0, 40}] (* _Vincenzo Librandi_, Jan 10 2014 *)
%o (Magma) [Ceiling(18^(n/3)): n in [0..40]]; // _Vincenzo Librandi_, Jan 10 2014
%Y Cf. powers of cube root of k ceiling up: A017981 (k=2), A017984 (k=3), A017987 (k=4), A017990 (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), this sequence (k=18), A018032 (k=19), A018035 (k=20), A018038 (k=21), A018041 (k=22), A018044 (k=23), A018047 (k=24).
%K nonn
%O 0,2
%A _N. J. A. Sloane_
%E More terms from _Vincenzo Librandi_, Jan 10 2014
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