A004261 a(n) = ceiling(10*log_2(n)).

0, 10, 16, 20, 24, 26, 29, 30, 32, 34, 35, 36, 38, 39, 40, 40, 41, 42, 43, 44, 44, 45, 46, 46, 47, 48, 48, 49, 49, 50, 50, 50, 51, 51, 52, 52, 53, 53, 53, 54, 54, 54, 55, 55, 55, 56, 56, 56, 57, 57, 57, 58, 58, 58, 58, 59, 59, 59, 59, 60

Offset

1,2

Links

Table of n, a(n) for n=1..60.

Mathematica

Table[Ceiling[10Log[2, n]], {n, 60}] (* Harvey P. Dale, Mar 09 2012 *)

Crossrefs

Sequence in context: A291639 A004260 A129848 * A083118 A378895 A238204

Adjacent sequences: A004258 A004259 A004260 * A004262 A004263 A004264

Keyword

nonn

Author

N. J. A. Sloane

Extensions

Corrected and extended by Harvey P. Dale, Mar 09 2012

Status

approved