A004220 a(n) = 10*log_10(n) rounded to the nearest integer.

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, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 19

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

Comments

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

Links

• Wikipedia, Decibel

Crossrefs

Cf. A371933.

Programs

Mathematica

Round[10 Log10[Range[60]]] (* Harvey P. Dale, Sep 06 2021 *)