Calculating note frequencies

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hz = pow(2, (notenumber+84.3763161)/12)

Note 12 (C-3): 261.6256 Hz
Note 13 (C#3): 277.1826 Hz
Note 14 (D-3): 293.6648 Hz
Note 15 (D#3): 311.1270 Hz
Note 16 (E-3): 329.6275 Hz
Note 17 (F-3): 349.2282 Hz
Note 18 (F#3): 369.9944 Hz
Note 19 (G-3): 391.9954 Hz
Note 20 (G#3): 415.3047 Hz
Note 21 (A-3): 440.0000 Hz
Note 22 (A#3): 466.1637 Hz
Note 23 (B-3): 493.8833 Hz
Note 24 (C-4): 523.2511 Hz
Note 25 (C#4): 554.3652 Hz
Note 26 (D-4): 587.3295 Hz
Note 27 (D#4): 622.2540 Hz
Note 28 (E-4): 659.2551 Hz
Note 29 (F-4): 698.4564 Hz
Note 30 (F#4): 739.9888 Hz
Note 31 (G-4): 783.9909 Hz
Note 32 (G#4): 830.6094 Hz
Note 33 (A-4): 880.0000 Hz
Note 34 (A#4): 932.3275 Hz
Note 35 (B-4): 987.7666 Hz
Note 36 (C-5): 1046.5022 Hz