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A215399 Number of length-n 0..6 arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..6. 0

%I #5 Dec 12 2015 16:20:44

%S 1,1,1,3,6,27,99,462,2205,11414,61028,337089,1894854,10794718,

%T 61989059,357903580,2073376576,12037807836

%N Number of length-n 0..6 arrays connected end-around, with no sequence of L<n elements immediately followed by itself (periodic "squarefree"), and new values introduced in order 0..6.

%C Column 6 of A215401.

%e Some solutions for n=9:

%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....2....2....2....2....2....2....2....2....2....2....2....2

%e ..3....3....3....3....3....3....1....1....1....3....1....1....3....3....3....3

%e ..4....4....4....4....2....4....3....3....3....4....3....3....4....0....1....4

%e ..0....1....5....0....4....1....4....2....4....2....4....1....2....1....2....0

%e ..2....2....0....2....1....5....0....4....3....0....0....4....4....3....4....5

%e ..1....5....4....4....0....4....5....3....1....3....3....0....3....4....5....4

%e ..3....3....6....3....4....5....4....5....4....5....1....5....4....5....1....6

%K nonn

%O 1,4

%A _R. H. Hardin_, Aug 09 2012

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)