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 A104310 Maximum length of perfect rulers that can be made from segments not exceeding n. 2
 2, 7, 18, 25, 32, 59, 71 (list; graph; refs; listen; history; text; 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. 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 minimum length of perfect rulers containing a segment of length n, A103294 definitions related to complete rulers. Sequence in context: A220396 A217253 A268837 * A301325 A001114 A107615 Adjacent sequences:  A104307 A104308 A104309 * A104311 A104312 A104313 KEYWORD hard,more,nonn AUTHOR Hugo Pfoertner, Mar 01 2005 STATUS approved

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Last modified August 12 06:22 EDT 2020. Contains 336438 sequences. (Running on oeis4.)