A004224 a(n) = 100*log_10(n) rounded up.

0, 31, 48, 61, 70, 78, 85, 91, 96, 100, 105, 108, 112, 115, 118, 121, 124, 126, 128, 131, 133, 135, 137, 139, 140, 142, 144, 145, 147, 148, 150, 151, 152, 154, 155, 156, 157, 158, 160, 161, 162, 163, 164, 165

Offset

1,2

Links

Table of n, a(n) for n=1..44.

Mathematica

Ceiling[100 Log10[Range[50]]] (* Harvey P. Dale, Jun 05 2021 *)

Crossrefs

Cf. A004222, A004223.

Cf. A004218, A004221, A004227, A004230.

Sequence in context: A139896 A289839 A244601 * A194129 A288291 A248904

Adjacent sequences: A004221 A004222 A004223 * A004225 A004226 A004227

Keyword

nonn

Author

N. J. A. Sloane

Status

approved