A104310 - OEIS

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A104310

Maximum length of perfect rulers that can be made from segments not exceeding n.

2, 7, 18, 25, 32, 59, 71 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`Extension: a(8)=81 is a conjectured continuation. For nomenclature related to perfect and optimal rulers see Peter Luschny's "Perfect Rulers" web pages.`
	LINKS	`Peter Luschny, Perfect and Optimal Rulers. A short introduction.` `Hugo Pfoertner, Largest and smallest maximum differences of consecutive marks of perfect rulers.` `Index entries for sequences related to perfect rulers.`
	EXAMPLE	`The complete list of these rulers starts:` `n.a(n)..rulers` `1..2....[0,1,2]` `2..7....[0,1,3,5,7]` `3.18....[0,1,4,7,10,13,16]` `4.25....[0,1,2,6,10,13,17,21,25]` `........[0,1,2,6,10,14,17,21,25]` `........[0,1,2,6,10,14,18,21,25]` `........[0,1,3,7,11,15,19,23,25]` `5.37....[0,1,2,3,8,13,18,23,28,33,37]` `6.59....[0,1,4,10,16,22,28,34,40,46,52,54,57,59]`
	CROSSREFS	`Cf. A104307 Least maximum of differences between consecutive marks, A104309 miminum length of perfect rulers containing a segment of length n, A103294 definitions related to complete rulers.` `Sequence in context: A013062 A013092 A174311 * A001114 A107615 A195605` `Adjacent sequences: A104307 A104308 A104309 * A104311 A104312 A104313`
	KEYWORD	`hard,more,nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), Mar 01 2005`

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Last modified February 15 07:42 EST 2012. Contains 205717 sequences.