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A074422
Number of 6-ary Lyndon words of length n with trace 0 and subtrace 0 over Z_6.
23
1, 0, 0, 4, 25, 165, 1157, 6552, 33045, 167928, 894829, 4921380, 27546779, 155483424, 877515282, 4936018176, 27757515151, 156680520702, 889046473445, 5068079700940, 28988793431460, 166189019079168, 954256949236825, 5486977453011768, 31597040041716690
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