A128247 - OEIS

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A128247

a(n) = A001783(n)/A038610(n).

1, 1, 1, 1, 2, 1, 12, 1, 8, 3, 1440, 1, 17280, 3, 112, 45, 29030400, 1, 522547200, 3, 12800, 945, 4828336128000, 1, 38626689024, 4725, 512512000, 2025, 3796230997278720000, 1, 113886929918361600000, 42525, 10436608000, 1403325 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,5`
	EXAMPLE	`The positive integers which are <= 10 and are coprime to 10 are 1,3,7,9. So a(10) = 137*9/LCM(1,3,7,9) = 189/63 = 3.`
	CROSSREFS	`Cf. A038610, A001783.` `Sequence in context: A112284 A167401 A069249 * A161150 A163088 A105608` `Adjacent sequences: A128244 A128245 A128246 * A128248 A128249 A128250`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet May 03 2007`
	EXTENSIONS	`More terms from Sean A. Irvine (sairvin(AT)xtra.co.nz), Jun 21 2011`

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Last modified February 17 17:35 EST 2012. Contains 206061 sequences.