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Least positive integers not excluded by the rule that if n is present then 2n+1 and 3n+1 are not allowed.

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1, 2, 6, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 22, 24, 26, 27, 30, 32, 35, 36, 38, 39, 40, 42, 44, 47, 48, 50, 51, 52, 54, 56, 57, 58, 59, 60, 62, 63, 64, 66, 68, 69, 70, 72, 74, 75, 76, 78, 80, 83, 84, 86, 87, 88, 90, 92, 93, 94, 96 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`What is the limit of a(n)/n?`
	EXAMPLE	`a(5)=9 since 9 is not equal to 2a(k)+1 nor 3a(k)+1 for 1<=k<5; and since 9 is allowed to be present, then 19(=29+1) and 28(=39+1) are to be excluded.`
	CROSSREFS	`Cf. A002977.` `Sequence in context: A136702 A064165 A003610 this_sequence A095879 A120736 A130099` `Adjacent sequences: A077474 A077475 A077476 this_sequence A077478 A077479 A077480`
	KEYWORD	`easy,nice,nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Nov 08 2002`

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

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