id:A129645 - OEIS Search Results

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a(1) = 1; for n>1, a(n) = a(n-1)*b(n-1) + 1, where {b(k)} is the concatenated list of the positive divisors of the terms of {a(k)}.

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1, 2, 3, 7, 8, 25, 26, 183, 184, 369 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`The list of positive divisors of the terms of {a(k)} is (sequence A129646) 1;1,2;1,3;1,7;1,2,4,8;.... The n-th term of {a(k)} is a(n-1)*A129646(n-1) +1.`
	CROSSREFS	`Cf. A129646.` `Sequence in context: A029785 A045545 A029790 this_sequence A112994 A056036 A056432` `Adjacent sequences: A129642 A129643 A129644 this_sequence A129646 A129647 A129648`
	KEYWORD	`more,nonn`
	AUTHOR	`Leroy Quet (qq-quet(AT)mindspring.com), Apr 25 2007`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.