A104310 Maximum length of perfect rulers that can be made from segments not exceeding n.
2, 7, 18, 25, 32, 59, 71, 81, 103, 135
Offset: 1
Examples
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]
Links
- Peter Luschny, Perfect and Optimal Rulers. A short introduction.
- Hugo Pfoertner, Largest and smallest maximum differences of consecutive marks of perfect rulers.
- F. Schwartau, Y. Schröder, L. Wolf and J. Schoebel, MRLA search results and source code, Nov 6 2020.
- F. Schwartau, Y. Schröder, L. Wolf and J. Schoebel, Large Minimum Redundancy Linear Arrays: Systematic Search of Perfect and Optimal Rulers Exploiting Parallel Processing, IEEE Open Journal of Antennas and Propagation, 2 (2021), 79-85.
- Index entries for sequences related to perfect rulers.
Crossrefs
Extensions
Conjectured a(8) proven via exhaustive search and a(9) ... a(10) added by Fabian Schwartau, Yannic Schröder, Lars Wolf, Joerg Schoebel, Feb 23 2021
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