0,3
For definitions, references and links related to complete rulers see A103294.
Table of n, a(n) for n=0..19.
Index entries for sequences related to perfect rulers.
a(n) = A103300(A004137(n+1))
a(5) = 6 counts the optimal rulers with 5 segments, {[0,1,6,9,11,13], [0,2,4,7,12,13], [0,1,4,5,11,13], [0,2,8,9,12,13], [0,1,2,6,10,13], [0,3,7,11,12,13]}.
Cf. A103296 (Complete rulers with n segments), A103301 (Perfect rulers with n segments).
Sequence in context: A201542 A000672 A115868 * A195204 A228892 A154779
Adjacent sequences: A103296 A103297 A103298 * A103300 A103301 A103302
nonn, hard, more, changed
Peter Luschny Feb 28 2005
approved
Register | Login | Lookup | Browse | Recent | Index | Plot 2 | Demos | Music | Wiki Superseeker | More pages | Editors | Help extend | Contribute sequence or comment