id:A073689 - OEIS Search Results

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Group the natural numbers so that the product of the terms in each group + 1 is a prime: (1), (2), (3, 4), (5, 6), (7, 8, 9, 10, 11), (12), (13, 14, 15), (16), ... Sequence gives first term in each group.

+0
3

1, 2, 3, 5, 7, 12, 13, 16, 17, 19, 24, 26, 32, 39, 44, 47, 56, 59, 61, 64, 69, 71, 73, 78, 79, 85, 95, 108, 109, 120, 128, 131, 133, 136, 137, 144, 151, 169, 212, 219, 225, 232, 233, 260, 276, 277, 284, 290, 292, 293, 295, 311, 317, 326, 329, 331, 355, 358, 359, 365 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`a(k+1) - a(k) = 4 has no solution.`
	CROSSREFS	`Cf. A073688, A073690.` `Sequence in context: A092620 A028843 A028842 this_sequence A031216 A004683 A100036` `Adjacent sequences: A073686 A073687 A073688 this_sequence A073690 A073691 A073692`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 12 2002`
	EXTENSIONS	`More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 24 2003`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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