|
%I #13 May 03 2019 07:45:17
%S 0,0,0,0,8,40,160,576,1920,6528,23040,84480,317440,1198080,4508328,
%T 16908288,63406080,238605640,902430720,3429236736,13076616480,
%U 49977753600,191312691200,733365665600,2815436626328,10825959997440,41694904974720,160823204904960
%N Number of 4-ary Lyndon words of length n over Z_4 with trace 2 and subtrace 2.
%H Max Alekseyev, <a href="http://home.gwu.edu/~maxal/gpscripts/">PARI/GP scripts for miscellaneous math problems</a>
%H F. Ruskey, <a href="http://combos.org/TSlyndonZ4">4-ary Lyndon words with given trace and subtrace</a>
%Y Cf. A068596, A074403, A074404, A074405, A074406, A074407, A074408, A074409, A074410, A074411, A074413.
%K easy,nonn
%O 1,5
%A _Frank Ruskey_ and Nate Kube, Aug 22 2002
%E Terms a(16) onward from _Max Alekseyev_, Apr 09 2013
|
