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A074414
Number of 5-ary Lyndon words of length n over Z_5 with trace 0 and subtrace 0.
7
1, 0, 0, 6, 24, 104, 432, 1950, 8736, 39298, 177784, 813748, 3755048, 17438400, 81380192, 381468750, 1795133272, 8477100632, 40154790296, 190735234220, 908261625600, 4334883167500, 20732048658288, 99341074218100, 476837158203000, 2292486335637500
OFFSET
1,4
COMMENTS
Same as number of Lyndon words of length n over GF(5) with trace 0 and subtrace 0.
KEYWORD
easy,nonn
AUTHOR
Frank Ruskey and Nate Kube, Aug 22 2002
EXTENSIONS
Terms a(16) onward from Max Alekseyev, Apr 09 2013
STATUS
approved