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 A018026 Powers of cube root of 17 rounded up. 23
 1, 3, 7, 17, 44, 113, 289, 744, 1911, 4913, 12633, 32483, 83521, 214757, 552199, 1419857, 3650853, 9387369, 24137569, 62064487, 159585273, 410338673, 1055096276, 2712949631, 6975757441, 17936636689, 46120143717, 118587876497, 304922823712 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..200 MAPLE Digits:= 1000: a:= n-> ceil(17^(n/3)): seq(a(n), n=0..30);  # Alois P. Heinz, Nov 23 2013 MATHEMATICA Table[Ceiling[17^(n/3)], {n, 0, 40}] (* Vincenzo Librandi, Jan 10 2014 *) PROG (PARI) a(n) = if (n % 3, ceil((17^(1/3))^n), 17^(n/3)); \\ Michel Marcus, Nov 23 2013 (MAGMA) [Ceiling(17^(n/3)): n in [0..40]]; // Vincenzo Librandi, Jan 10 2014 CROSSREFS Cf. A010589, A018024, A018025, and 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), this sequence (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: A294129 A308589 A018025 * A087953 A210839 A261235 Adjacent sequences:  A018023 A018024 A018025 * A018027 A018028 A018029 KEYWORD nonn AUTHOR STATUS approved

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Last modified August 24 18:12 EDT 2019. Contains 326295 sequences. (Running on oeis4.)