id:A091850 - OEIS Search Results

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a(1) = 1; a(m) is the smallest yet unpicked positive integer such that sum{k=1 to m} k* a(k) is a prime.

+0
2

1, 2, 4, 3, 6, 5, 12, 7, 16, 9, 14, 13, 8, 11, 10, 17, 18, 15, 22, 24, 20, 23, 26, 25, 30, 28, 32, 33, 38, 29, 48, 27, 34, 44, 36, 19, 42, 47, 52, 35, 50, 21, 56, 53, 46, 39, 60, 45, 54, 31, 40, 37, 58, 49, 70, 55, 68, 61, 72, 43, 98, 41, 74, 57, 84, 59, 78, 64, 82 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Proposed by Leroy Quet, Feb 13 2004; computed by several people including Fred W. Helenius, Feb 14 2004.` `Comment from Fred Helenius: Every positive integer up to 82 appears in the first 100 terms; everything up to 922 appears in the first 1000. Apart from a(1), odd-index terms must be even; even-index terms are occasionally even as well, so the odd values tend to arrive late.`
	CROSSREFS	`Cf. A091851.` `Sequence in context: A132666 A116533 A087559 this_sequence A039819 A083050 A083044` `Adjacent sequences: A091847 A091848 A091849 this_sequence A091851 A091852 A091853`
	KEYWORD	`nonn`
	AUTHOR	`njas, Mar 13 2004`

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

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