id:A117140 - OEIS Search Results

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a(1)=5, a(2)=7; for n >= 3, a(n) is smallest number which is uniquely of the form a(j)+a(k) with 1<=j<k<n.

+0
2

5, 7, 12, 17, 19, 22, 26, 27, 32, 33, 36, 37, 40, 42, 46, 50, 56, 60, 66, 70, 71, 74, 81, 85, 91, 99, 101, 132, 138, 140, 150, 154, 156, 158, 160, 179, 181, 185, 189, 195, 205, 209, 233, 234, 236, 240, 248, 258, 264, 268, 287, 289, 293, 297, 303, 336, 340, 342, 348 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`An Ulam-type sequence - see A002858 for many further references, comments, etc.` `Does not seem to have any nice periodicity like A007300 does. - Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 24 2006`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..10000` `A. N. Debono, Ulam Sequences`
	CROSSREFS	`Sequence in context: A082565 A086255 A047382 this_sequence A031144 A020686 A011984` `Adjacent sequences: A117137 A117138 A117139 this_sequence A117141 A117142 A117143`
	KEYWORD	`nonn`
	AUTHOR	`njas, Apr 29 2006`
	EXTENSIONS	`More terms from Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 24 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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