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 A001618 Nearest integer to 2*n*log(n). (Formerly M2623 N1038) 1
 0, 0, 3, 7, 11, 16, 22, 27, 33, 40, 46, 53, 60, 67, 74, 81, 89, 96, 104, 112, 120, 128, 136, 144, 153, 161, 169, 178, 187, 195, 204, 213, 222, 231, 240, 249, 258, 267, 276, 286, 295, 305, 314, 323, 333, 343, 352, 362, 372, 381, 391, 401, 411, 421, 431, 441 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 REFERENCES N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..100000 MATHEMATICA Join[{0}, Table[Floor[2*n*Log[n] + 1/2], {n, 60}]] (* T. D. Noe, Aug 09 2012 *) PROG (MAGMA) [0], [Round(2*n*Log(n)): n in [1..60]]; // Vincenzo Librandi, Oct 21 2011 (PARI) a(n)=round(2*n*log(n)) \\ Charles R Greathouse IV, Apr 17 2012 CROSSREFS Sequence in context: A166092 A184913 A022821 * A118027 A082644 A131024 Adjacent sequences:  A001615 A001616 A001617 * A001619 A001620 A001621 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified August 21 13:36 EDT 2017. Contains 290890 sequences.