id:A120066 - OEIS Search Results

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A120066

(n-1)! divided by (product phi(d)! ; d divides n).

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1, 1, 1, 3, 1, 30, 1, 105, 28, 630, 1, 207900, 1, 12012, 45045, 675675, 1, 171531360, 1, 2618916300, 3527160, 3879876, 1, 139143023019000, 10626, 67603900, 43743700, 21925567263600, 1, 2360561385517335000, 1, 203067496256625, 14902327440 (list; graph; listen)

	OFFSET	`1,4`
	PROGRAM	`(PARI) a(n) = (n-1)! / prod(i=1, n, if(n%i==0, eulerphi(i)!, 1))`
	CROSSREFS	`Cf. A120065.` `Sequence in context: A027495 A138545 A165624 this_sequence A046979 A141411 A016481` `Adjacent sequences: A120063 A120064 A120065 this_sequence A120067 A120068 A120069`
	KEYWORD	`nonn`
	AUTHOR	`Martin Fuller (martin_n_fuller(AT)btinternet.com), Jun 06 2006`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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