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A074443
Number of 6-ary Lyndon words of length n with trace 3 and subtrace 3 over Z_6.
21
0, 0, 0, 9, 42, 207, 1157, 5832, 29151, 157464, 894829, 5080293, 28421280, 157913897, 877515282, 4897760256, 27541503360, 156068518554, 889046473445, 5077997833419, 29045467515255, 166351313967709, 954256949236825, 5484299577441192, 31581615565250142
OFFSET
1,4
KEYWORD
easy,nonn
AUTHOR
Frank Ruskey and Nate Kube, Aug 23 2002
EXTENSIONS
Terms a(11) onwards from Max Alekseyev, Feb 20 2010
STATUS
approved