id:A084716 - OEIS Search Results

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a(1) = 1, a(n) = smallest multiple of a(n-1) > a(n-1) such that a(n) + 1 is a prime.

+0
4

1, 2, 4, 12, 36, 72, 432, 1296, 2592, 10368, 72576, 508032, 1524096, 12192768, 73156608, 146313216, 438939648, 2633637888, 23702740992, 142216445952, 1991030243328, 37829574623232, 416125320855552 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A084717, A084718, A036012.` `Sequence in context: A148207 A112083 A089965 this_sequence A149837 A149838 A149839` `Adjacent sequences: A084713 A084714 A084715 this_sequence A084717 A084718 A084719`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jun 11 2003`
	EXTENSIONS	`Edited by Don Reble (djr(AT)nk.ca), Jun 19 2003`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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