id:A053340 - OEIS Search Results

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Terms of A050530 with four prime divisors.

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5865, 8645, 10005, 10465, 13685, 15045, 15295, 16269, 18285, 20445, 22015, 24871, 26845, 27965, 28405, 28815, 29733, 30705, 31031, 31255, 33215, 35245, 36105, 37037, 37145, 37365, 37765, 37995, 38985, 39831, 40579, 41041, 43435, 44135 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`n=pqrs, having 4 prime divisors, square-free and n-Phi[n] is a prime`
	EXAMPLE	`The 3rd entry is 10005=3523*29, also in A050530 and A051593[10005]=5077 is a prime.`
	CROSSREFS	`A051593, A050530.` `Adjacent sequences: A053337 A053338 A053339 this_sequence A053341 A053342 A053343` `Sequence in context: A020416 A076808 A104927 this_sequence A061735 A025513 A015295`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Jan 05 2000`

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

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