id:A069114 - OEIS Search Results

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Square-free part of prime(n)-1 : the smallest number such that a(n)*(prime(n)-1) is a square.

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1, 2, 1, 6, 10, 3, 1, 2, 22, 7, 30, 1, 10, 42, 46, 13, 58, 15, 66, 70, 2, 78, 82, 22, 6, 1, 102, 106, 3, 7, 14, 130, 34, 138, 37, 6, 39, 2, 166, 43, 178, 5, 190, 3, 1, 22, 210, 222, 226, 57, 58, 238, 15, 10, 1, 262, 67, 30, 69, 70, 282, 73, 34, 310, 78, 79, 330, 21, 346, 87 (list; graph; listen)

	OFFSET	`1,2`
	PROGRAM	`(PARI) for(n=1, 100, print1(core(prime(n)-1)), ", "))`
	CROSSREFS	`Cf. A007913.` `Adjacent sequences: A069111 A069112 A069113 this_sequence A069115 A069116 A069117` `Sequence in context: A021465 A139526 A025252 this_sequence A121927 A039762 A039795`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 06 2002`

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Last modified October 12 13:40 EDT 2008. Contains 144830 sequences.

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