A123438 - OEIS

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A123438

Numbers n such that the denominator of n!/!n (= A000142(n)/A000166(n)) is prime.

4, 5, 6, 7, 10, 11, 15, 16, 34, 44, 63, 66, 168, 427, 575 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	CROSSREFS	`Cf. A000142, A000166, A053557.` `Sequence in context: A010419 A047260 A172999 * A039024 A065028 A107756` `Adjacent sequences: A123435 A123436 A123437 * A123439 A123440 A123441`
	KEYWORD	`nonn`
	AUTHOR	`Ed Pegg Jr (ed(AT)mathpuzzle.com), Jul 11 2008`

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Last modified February 16 16:00 EST 2012. Contains 205938 sequences.