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 A303244 Number of 4Xn 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Apr 20 2018 10:57:15

%S 8,3,55,10,255,149,1676,3307,18505,65498,290437,1198777,5087180,

%T 21490967,90839013,384340750,1625471539,6876513885,29091034026,

%U 123070552817,520674602677,2202800218342,9319394664521,39427619066391,166806435914930

%N Number of 4Xn 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 4 of A303242.

%H R. H. Hardin, <a href="/A303244/b303244.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A303244/a303244.txt">Empirical recurrence of order 67</a>

%F Empirical recurrence of order 67 (see link above)

%e Some solutions for n=5

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

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

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

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

%Y Cf. A303242.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 20 2018

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Last modified September 8 06:50 EDT 2024. Contains 375751 sequences. (Running on oeis4.)