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A212827 Number of 0..6 arrays of length n with no adjacent pair equal to its immediately preceding adjacent pair, and new values introduced in 0..6 order 1

%I #4 May 28 2012 08:34:16

%S 1,2,5,13,44,168,717,3359,17055,92749,534071,3220152,20122695,

%T 129180223,845868450,5618381653,37699577379,254789247816,

%U 1730682217663,11797467544723,80618379435810,551861368167305,3782253874750807

%N Number of 0..6 arrays of length n with no adjacent pair equal to its immediately preceding adjacent pair, and new values introduced in 0..6 order

%C Column 6 of A212829

%H R. H. Hardin, <a href="/A212827/b212827.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 16*a(n-1) -79*a(n-2) +70*a(n-3) +361*a(n-4) -372*a(n-5) -964*a(n-6) +144*a(n-7) +1116*a(n-8) +720*a(n-9) +144*a(n-10) for n>13

%e Some solutions for n=8

%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....0....1....1....1....1....1....1....0....1

%e ..2....2....0....2....0....2....0....1....2....2....2....1....2....2....1....2

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ May 28 2012

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Last modified April 25 07:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)