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 A194979 1 + floor(n/sqrt(3)). 6
 1, 2, 2, 3, 3, 4, 5, 5, 6, 6, 7, 7, 8, 9, 9, 10, 10, 11, 11, 12, 13, 13, 14, 14, 15, 16, 16, 17, 17, 18, 18, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25, 25, 26, 26, 27, 28, 28, 29, 29, 30, 31, 31, 32, 32, 33, 33, 34, 35, 35, 36, 36, 37, 37, 38, 39, 39, 40, 40, 41, 41 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(n) = 1 + A097337(n). The fractalization of A194979 is A194980. Least number k such that k*tan(1/k) - 1 < 1/n^2. - Clark Kimberling, Dec 02 2014 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..10000 MATHEMATICA p[n_]:=1+Floor[n/Sqrt[3]] Table[p[n], {n, 1, 90}] (* A194979 *) PROG (MAGMA) [1+Floor(n/Sqrt(3)): n in [1..80] ]; // Vincenzo Librandi, Sep 10 2011 (PARI) a(n)=1+sqrtint(n^2\3) \\ Charles R Greathouse IV, Sep 02 2015 CROSSREFS Cf. A097337, A194980, A194981. Sequence in context: A309093 A085268 A214656 * A098294 A195119 A077467 Adjacent sequences:  A194976 A194977 A194978 * A194980 A194981 A194982 KEYWORD nonn,easy AUTHOR Clark Kimberling, Sep 07 2011 STATUS approved

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Last modified August 14 19:09 EDT 2020. Contains 336483 sequences. (Running on oeis4.)