id:A073897 - OEIS Search Results

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a(1) = 1, a(n) = smallest odd or even number not occurring earlier according as n is prime or composite.

+0
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1, 3, 5, 2, 7, 4, 9, 6, 8, 10, 11, 12, 13, 14, 16, 18, 15, 20, 17, 22, 24, 26, 19, 28, 30, 32, 34, 36, 21, 38, 23 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A073898.` `Sequence in context: A064790 A113966 A164611 this_sequence A097465 A120683 A079313` `Adjacent sequences: A073894 A073895 A073896 this_sequence A073898 A073899 A073900`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 18 2002`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.