id:A001149 - OEIS Search Results

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A self-generating sequence.
(Formerly M0689 N0254)

+0
5

1, 2, 3, 5, 8, 13, 17, 26, 34, 45, 54, 67, 81, 97, 115, 132, 153, 171, 198, 228, 256, 288, 323, 357, 400, 439, 488, 530, 581, 627, 681, 732, 790, 843, 908, 963, 1029, 1085 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`R. K. Guy, The second strong law of small numbers. Math. Mag. 63 (1990), no. 1, 3-20.`
	FORMULA	`a(1)=1, a(2)=2, a(n+1) chosen so that a(n+1)-a(n-1) is the first number not obtainable as a(i)-a(j) for 1<=i<j<=n.`
	CROSSREFS	`Cf. A054540.` `Adjacent sequences: A001146 A001147 A001148 this_sequence A001150 A001151 A001152` `Sequence in context: A078695 A121367 A070217 this_sequence A081612 A120761 A045842`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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