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A219067 Hilltop maps: number of 6 X n binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..2 6 X n array. 1

%I #6 Sep 07 2022 15:32:43

%S 1,3697,256849,16520553,1054361217,67441480753,4315297469409,

%T 276118155837273,17667523952980289,1130460774142233681,

%U 72332806348866425545,4628232467782206332137,296138599053919461336353

%N Hilltop maps: number of 6 X n binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..2 6 X n array.

%C Row 6 of A219063.

%H R. H. Hardin, <a href="/A219067/b219067.txt">Table of n, a(n) for n = 1..32</a>

%e Some solutions for n=3

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

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

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

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

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

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

%Y Cf. A219063.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 11 2012

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Last modified April 25 06:49 EDT 2024. Contains 371964 sequences. (Running on oeis4.)