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A083089
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Numbers that are congruent to {0, 2, 4, 6, 7, 9, 11} mod 12.
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9
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0, 2, 4, 6, 7, 9, 11, 12, 14, 16, 18, 19, 21, 23, 24, 26, 28, 30, 31, 33, 35, 36, 38, 40, 42, 43, 45, 47, 48, 50, 52, 54, 55, 57, 59, 60, 62, 64, 66, 67, 69, 71, 72, 74, 76, 78, 79, 81, 83, 84, 86, 88, 90, 91, 93, 95, 96, 98, 100, 102, 103, 105, 107, 108, 110
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Key-numbers of the pitches of a Lydian mode scale on a standard chromatic keyboard, with root = 0. A Lydian mode scale can, for example, be played on consecutive white keys of a standard keyboad, starting on the root tone F.
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LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (1,0,0,0,0,0,1,-1).
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FORMULA
| G.f. x^2*(x^4+x^3+2)*(1+x+x^2) / ( (x^6+x^5+x^4+x^3+x^2+x+1)*(x-1)^2 ). - R. J. Mathar, Oct 08 2011
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CROSSREFS
| Cf. A083026-A083028, A083030, A083031, A083032, A083033, A083034, A082977, A083120
Sequence in context: A195127 A083088 A080755 * A136617 A198081 A081223
Adjacent sequences: A083086 A083087 A083088 * A083090 A083091 A083092
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KEYWORD
| nonn
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AUTHOR
| James Ingram (j.ingram(AT)t-online.de), Jun 01 2003
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