id:A127427 - OEIS Search Results

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v_3( (6n)! ) - v_3( (3n)! ), where v_3(N) is the 3-adic valuation A007949(N).

+0
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0, 1, 3, 4, 5, 8, 9, 10, 12, 13, 14, 16, 17, 18, 22, 23, 24, 26, 27, 28, 30, 31, 32, 35, 36, 37, 39, 40, 41, 43, 44, 45, 48, 49, 50, 52, 53, 54, 56, 57, 58, 63, 64, 65, 67, 68, 69, 71, 72, 73, 76, 77, 78, 80, 81, 82, 84, 85, 86, 89, 90, 91, 93, 94, 95, 97, 98, 99, 103, 104, 105, 107 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n) - n = a( [(n+1)/3] ).`
	CROSSREFS	`Cf. A007949, A054861, A004128.` `Sequence in context: A112594 A120519 A100614 this_sequence A047205 A120631 A047601` `Adjacent sequences: A127424 A127425 A127426 this_sequence A127428 A127429 A127430`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Apr 02 2007`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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