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 A004234 a(n) = floor(10*log(n)). 3
 0, 6, 10, 13, 16, 17, 19, 20, 21, 23, 23, 24, 25, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 32, 32, 32, 33, 33, 34, 34, 34, 34, 35, 35, 35, 36, 36, 36, 36, 37, 37, 37, 37, 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, 40, 40, 40, 40, 40, 40, 41, 41, 41, 41, 41, 41 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..10000 EXAMPLE a(2) = 6 because 10*log(2) = 6.9314718... a(3) = 10 because 10*log(3) = 10.9861228... a(4) = 13 because 10*log(4) = 13.8629436... MATHEMATICA Table[Floor[10Log[n]], {n, 75}] (* Alonso del Arte, Dec 24 2013 *) CROSSREFS Cf. A004219. Sequence in context: A006187 A346958 A288222 * A121149 A315140 A315141 Adjacent sequences: A004231 A004232 A004233 * A004235 A004236 A004237 KEYWORD nonn,easy AUTHOR N. J. A. Sloane EXTENSIONS More terms from Alonso del Arte, Dec 24 2013 STATUS approved

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Last modified August 11 23:45 EDT 2024. Contains 375082 sequences. (Running on oeis4.)