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A004234 10*log(n) rounded down. 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 10log(2) = 6.9314718...

a(3) = 10 because 10log(3) = 10.986122886681...

a(4) = 13 because 10log(4) = 13.8629436111989...

MATHEMATICA

Table[Floor[10Log[n]], {n, 75}] (* Alonso del Arte, Dec 24 2013 *)

CROSSREFS

Cf. A004219.

Sequence in context: A213428 A006187 A288222 * A121149 A315140 A315141

Adjacent sequences:  A004231 A004232 A004233 * A004235 A004236 A004237

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms Alonso del Arte, Dec 24 2013

STATUS

approved

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Last modified August 11 15:12 EDT 2020. Contains 336428 sequences. (Running on oeis4.)