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 A218998 Unmatched value maps: number of nX4 binary arrays indicating the locations of corresponding elements not equal to any horizontal, diagonal or antidiagonal neighbor in a random 0..2 nX4 array 1

%I

%S 7,163,2265,31857,461681,6639893,95431043,1372612359,19740345667,

%T 283887907827,4082690596769,58714522782689,844392025770105,

%U 12143471562419701,174639147022394875,2511541333793121239

%N Unmatched value maps: number of nX4 binary arrays indicating the locations of corresponding elements not equal to any horizontal, diagonal or antidiagonal neighbor in a random 0..2 nX4 array

%C Column 4 of A219002

%H R. H. Hardin, <a href="/A218998/b218998.txt">Table of n, a(n) for n = 1..108</a>

%F Empirical: a(n) = 10*a(n-1) +42*a(n-2) +282*a(n-3) +281*a(n-4) +148*a(n-5) -320*a(n-6) -320*a(n-7) -256*a(n-8)

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 09 2012

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Last modified August 15 11:25 EDT 2022. Contains 356145 sequences. (Running on oeis4.)