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 A283548 Number of 7Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors. 1

%I #4 Mar 10 2017 09:35:39

%S 128,2570,54211,1529463,34266804,854841910,20707472573,500387112083,

%T 12194309578408,295445669810158,7175900498325835,174194410958021304,

%U 4227944315256983524,102642336532085688286,2491498898316960926393

%N Number of 7Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors.

%C Row 7 of A283543.

%H R. H. Hardin, <a href="/A283548/b283548.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A283548/a283548.txt">Empirical recurrence of order 69</a>

%F Empirical recurrence of order 69 (see link above)

%e Some solutions for n=3

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

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

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

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

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

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

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

%Y Cf. A283543.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 10 2017

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Last modified June 21 04:30 EDT 2024. Contains 373540 sequences. (Running on oeis4.)