A004220 - OEIS

%I #17 Nov 04 2024 09:31:26

%S 0,3,5,6,7,8,8,9,10,10,10,11,11,11,12,12,12,13,13,13,13,13,14,14,14,

%T 14,14,14,15,15,15,15,15,15,15,16,16,16,16,16,16,16,16,16,17,17,17,17,

%U 17,17,17,17,17,17,17,17,18,18,18,18,18,18,18,18,18,18,18,18,18,18,19

%N a(n) = 10*log_10(n) rounded to the nearest integer.

%C When the power of a wave (sound or electrical) increases by a factor of n (such as when n independent/uncorrelated waves of equal power are summed together), this increase is 10*log_10(n) decibels. - _Charles L. Hohn_, Jul 25 2024

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Decibel">Decibel</a>

%t Round[10 Log10[Range[60]]] (* _Harvey P. Dale_, Sep 06 2021 *)

%Y Cf. A371933.

%K nonn

%O 1,2

%A _N. J. A. Sloane_