A081032 - OEIS

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A081032

Positions of black keys on piano keyboard.

2, 5, 7, 10, 12, 14, 17, 19, 22, 24, 26, 29, 31, 34, 36, 38, 41, 43, 46, 48, 50, 53, 55, 58, 60, 62, 65, 67, 70, 72, 74, 77, 79, 82, 84, 86 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	FORMULA	`a(n) = [(12n+2)/5]`
	EXAMPLE	`2nd, 5th, 7th, 10th, etc. keys of piano keyboard are black.`
	CROSSREFS	`Cf. A059620, A081031.` `Sequence in context: A206522 A188016 A195437 * A082845 A003153 A187475` `Adjacent sequences: A081029 A081030 A081031 * A081033 A081034 A081035`
	KEYWORD	`fini,full,nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net), Mar 02 2003`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.