id:A058000 - OEIS Search Results

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a(n) is smallest prime such that a(n)+1 is a proper multiple of a(n-1)+1 [with a(1)=1].

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1, 3, 7, 23, 47, 191, 383, 1151, 6911, 27647, 138239, 691199, 3455999, 34559999, 138239999, 414719999, 2073599999, 16588799999, 364953599999, 4744396799999, 66421555199999, 132843110399999, 664215551999999, 3321077759999999 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)= Product{i=1_n}[A036013(i)]-1 =a(n-1)*A036013(n)-1+A036013(n)`
	CROSSREFS	`Cf. A036013, A057999.` `Sequence in context: A079477 A014426 A054270 this_sequence A002715 A112052 A127178` `Adjacent sequences: A057997 A057998 A057999 this_sequence A058001 A058002 A058003`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Nov 02 2000`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research