id:A050495 - OEIS Search Results

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Arithmetic progressions of at least 4 terms having the same value of phi(x) start at these numbers.

+0
9

72, 144, 216, 216, 288, 432, 432, 576, 648, 648, 792, 864, 864, 1080, 1152, 1224, 1296, 1296, 1368, 1446, 1512, 1584, 1656, 1728, 1728, 1944, 1944, 2088, 2160, 2232, 2304, 2376, 2376, 2448, 2592, 2592, 2664, 2736, 2892, 2952, 3024, 3096, 3168 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`phi(72)=phi(78)=phi(84)=phi(90)=24, so 72 is a member of the sequence.`
	CROSSREFS	`Cf. A000010, A050496, A050497.` `Sequence in context: A143741 A157336 A060661 this_sequence A137883 A039498 A063357` `Adjacent sequences: A050492 A050493 A050494 this_sequence A050496 A050497 A050498`
	KEYWORD	`nonn`
	AUTHOR	`Jud McCranie (j.mccranie(AT)comcast.net), Dec 27 1999`

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

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