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A300679 Number of nX5 0..1 arrays with every element equal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 11 2018 08:40:05

%S 1,13,8,80,398,1382,6686,30218,131674,611429,2764144,12588291,

%T 57406818,261411829,1191585608,5430308271,24749976109,112805678823,

%U 514149652500,2343435239710,10681117766000,48683513703774,221894678763366

%N Number of nX5 0..1 arrays with every element equal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A300682.

%H R. H. Hardin, <a href="/A300679/b300679.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300682.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 11 2018

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Last modified September 2 02:41 EDT 2024. Contains 375602 sequences. (Running on oeis4.)