id:A069260 - OEIS Search Results

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a(n) = core(1)*core(2)*...*core(n) where core(x) is the square-free part of x (see A007913).

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1, 2, 6, 6, 30, 180, 1260, 2520, 2520, 25200, 277200, 831600, 10810800, 151351200, 2270268000, 2270268000, 38594556000, 77189112000, 1466593128000, 7332965640000, 153992278440000, 3387830125680000, 77920092890640000 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A007913.` `Sequence in context: A113461 A061558 A123144 this_sequence A056603 A019198 A097504` `Adjacent sequences: A069257 A069258 A069259 this_sequence A069261 A069262 A069263`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 14 2002`

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Last modified December 2 15:58 EST 2008. Contains 150992 sequences.

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