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A212830 Number of 0..n arrays of length n+1 with no adjacent pair equal to its immediately preceding adjacent pair, and new values introduced in 0..n order 1

%I #4 May 28 2012 08:38:12

%S 2,5,13,44,168,717,3360,17092,93538,546873,3396379,22300885,154193327,

%T 1118804486,8493592723,67288261914,554996479921,4756036642107,

%U 42266543239132,388879705390976,3698606881082199,36312877059583874

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

%C Subdiagonal 1 of A212829

%H R. H. Hardin, <a href="/A212830/b212830.txt">Table of n, a(n) for n = 1..60</a>

%e Some solutions for n

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ May 28 2012

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Last modified March 28 21:57 EDT 2024. Contains 371254 sequences. (Running on oeis4.)