id:A023585 - OEIS Search Results

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Least odd prime divisor of 2*p(n)-1, or 1 if 2*p(n)-1 is a power of 2.

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3, 5, 3, 13, 3, 5, 3, 37, 3, 3, 61, 73, 3, 5, 3, 3, 3, 11, 7, 3, 5, 157, 3, 3, 193, 3, 5, 3, 7, 3, 11, 3, 3, 277, 3, 7, 313, 5, 3, 3, 3, 19, 3, 5, 3, 397, 421, 5, 3, 457, 3, 3, 13, 3, 3, 3, 3, 541, 7, 3, 5, 3, 613, 3, 5, 3, 661, 673, 3, 17, 3, 3, 733, 5, 757, 3, 3, 13, 3, 19, 3 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Sequence in context: A105445 A049072 A059887 this_sequence A089948 A023583 A121278` `Adjacent sequences: A023582 A023583 A023584 this_sequence A023586 A023587 A023588`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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