1,3
Turns must be chromatically correct. e.g. n=3, R=Right Turn, A=Ahead, longest path is 8
RAR
A A
Sequence in context: A063539 A081925 A049199 this_sequence A078609 A084809 A110558
Adjacent sequences: A160389 A160390 A160391 this_sequence A160393 A160394 A160395
hard,nonn
David J Scambler (dscambler(AT)bmm.com), May 12 2009
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