id:A112752 - OEIS Search Results

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Greatest common divisors of consecutive terms of numbers of the form 3^i*5^j.

+0
3

1, 1, 1, 3, 5, 1, 9, 15, 3, 1, 5, 45, 9, 3, 15, 5, 25, 27, 9, 45, 15, 75, 81, 1, 125, 135, 45, 225, 243, 3, 375, 405, 5, 625, 675, 729, 9, 1125, 1215, 15, 1875, 2025, 2187, 1, 3125, 3375, 3645, 45, 5625, 6075, 6561, 3, 9375, 10125, 10935, 5, 15625, 16875, 18225 (list; graph; listen)

	OFFSET	`1,4`
	COMMENT	`a(n) = GCD(A003593(n),A003593(n+1)).`
	CROSSREFS	`Cf. A112757.` `Sequence in context: A021970 A115335 A054586 this_sequence A101035 A026253 A138259` `Adjacent sequences: A112749 A112750 A112751 this_sequence A112753 A112754 A112755`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 18 2005`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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