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%I #4 Mar 11 2014 12:01:47
%S 1,1,2,4,12,39,138,503,1864,6936,25868,96512,360203,1344408,5018051,
%T 18729944,69910398,260943079,973980990,3635421345,13569354266,
%U 50648137765,189046143161
%N Number of squarefree words of length n in a 5-ary alphabet, with new values 0..4 introduced in increasing order
%C Column 4 of A215075
%e Some solutions for n=6
%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e ..1....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1
%e ..2....2....2....2....0....2....2....2....0....2....2....0....2....2....0....2
%e ..0....3....3....1....2....3....3....1....2....1....0....2....0....3....2....3
%e ..1....4....0....3....3....0....0....3....3....3....3....3....2....2....0....1
%e ..0....0....1....2....0....2....3....4....1....0....4....4....1....4....3....0
%K nonn
%O 1,3
%A _R. H. Hardin_ Aug 02 2012
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