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Search: id:A101286
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| A101286 |
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Rounded frequencies in Hz of the notes of the chromatic music scale beginning at A. |
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+0
2
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| 55, 58, 62, 65, 69, 73, 78, 82, 87, 92, 98, 104, 110, 117, 123, 131, 139, 147, 156, 165, 175, 185, 196, 208, 220, 233, 247, 262, 277, 294, 311, 330, 349, 370, 392, 415, 440, 466, 494, 523, 554, 587, 622, 659, 698, 740, 784, 831, 880, 932, 988, 1047, 1109, 1175
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The scale is equal-tempered. ("Wohltemperiert", introduced by Johann Sebastian Bach.)
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LINKS
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T. Yahaya Abdullah, Music Scales, part of Synthesizers, Music and Television.
Wikipedia, Equal temperament
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FORMULA
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a(1+n)=round[55*2^(n/12)] . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 12 2008
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MAPLE
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A101286 := proc(n) round( 55*2.0^((n-1)/12.0)) ; end: seq(A101286(n), n=1..80) ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 12 2008
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CROSSREFS
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Cf. A071831, A071832, A071833.
Sequence in context: A112892 A042511 A020282 this_sequence A101285 A159024 A039356
Adjacent sequences: A101283 A101284 A101285 this_sequence A101287 A101288 A101289
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KEYWORD
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nonn
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AUTHOR
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Angela Johansson (angvi798(AT)student.liu.se), Dec 20 2004
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EXTENSIONS
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Corrected by T. D. Noe (noe(AT)sspectra.com), Nov 02 2006
More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 12 2008
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