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A074404
Number of 4-ary Lyndon words of length n over Z_4 with trace 0 and subtrace 2.
12
0, 0, 0, 1, 8, 36, 160, 548, 1920, 6496, 23040, 84565, 317440, 1197824, 4508328, 16905344, 63406080, 238602228, 902430720, 3429249843, 13076616480, 49977704448, 191312691200, 733365135860, 2815436626328, 10825959342080, 41694904974720, 160823207301705
OFFSET
1,5
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