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 A284228 Number of 7 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero. 1

%I

%S 64,2719,170155,19371893,2058141264,232036495984,26772321109067,

%T 3148948157013672,375099683101859897,45101225320947864321,

%U 5461569534638135452419,665104722603120565892383

%N Number of 7 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

%C Row 7 of A284222.

%H R. H. Hardin, <a href="/A284228/b284228.txt">Table of n, a(n) for n = 1..24</a>

%e Some solutions for n=3

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

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

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

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

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

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

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

%Y Cf. A284222.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 23 2017

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Last modified June 27 23:34 EDT 2022. Contains 354903 sequences. (Running on oeis4.)