A004222 a(n) = 100*log_10(n) rounded down.

0, 30, 47, 60, 69, 77, 84, 90, 95, 100, 104, 107, 111, 114, 117, 120, 123, 125, 127, 130, 132, 134, 136, 138, 139, 141, 143, 144, 146, 147, 149, 150, 151, 153, 154, 155, 156, 157, 159, 160, 161, 162, 163, 164

Offset

1,2

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Formula

a(n) = floor(100*log_10(n)). - Wesley Ivan Hurt, Mar 15 2023

Mathematica

Floor[100*Log[10, Range[50]]] (* Harvey P. Dale, May 12 2012 *)

Crossrefs

Sequence in context: A114944 A075290 A281919 * A207143 A004223 A230558

Adjacent sequences: A004219 A004220 A004221 * A004223 A004224 A004225

Keyword

nonn

Author

N. J. A. Sloane

Status

approved