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 A220389 Majority value maps: number of 4 X n binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..1 4 X n array. 1

%I

%S 1,65,753,7462,96772,1191846,14300020,173237008,2099827058,

%T 25429907185,308015025891,3730748101061,45187679794622,

%U 547324309089088,6629322362588949,80295917106362511,972563175651344849

%N Majority value maps: number of 4 X n binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..1 4 X n array.

%C Row 4 of A220386.

%H R. H. Hardin, <a href="/A220389/b220389.txt">Table of n, a(n) for n = 1..29</a>

%e Some solutions for n=3

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

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

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

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

%Y Cf. A220386.

%K nonn

%O 1,2

%A _R. H. Hardin_ Dec 13 2012

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Last modified March 26 21:31 EDT 2023. Contains 361553 sequences. (Running on oeis4.)