id:A076636 - OEIS Search Results

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a(1) = 1, a(2n) = smallest prime > (2n-1)-th partial sum of the sequence itself and a(2n+1) = smallest composite number > 2n-th partial sum of the sequence.

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1, 2, 4, 11, 20, 41, 80, 163, 323, 647, 1293, 2591, 5177, 10357, 20711, 41443, 82865, 165749, 331479, 662999, 1325957, 2651947, 5303861, 10607731, 21215453, 42430919, 84861825, 169723691, 339447341, 678894751, 1357789433, 2715578891 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A076975.` `Sequence in context: A139785 A000638 A039824 this_sequence A011954 A026275 A152597` `Adjacent sequences: A076633 A076634 A076635 this_sequence A076637 A076638 A076639`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Oct 23 2002`
	EXTENSIONS	`More terms from Frank Adams-Watters (FrankTAW(AT)Netscape.net), Aug 29 2006`

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

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