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A300503 Number of nX5 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 07 2018 07:32:12

%S 8,6,6,32,56,208,546,2006,5835,18466,58308,186335,582625,1860566,

%T 5858450,18630807,58838581,186793554,590956811,1873885918,5932477246,

%U 18802162085,59546364960,188676223980,597626466721,1893415121389,5997783554269

%N Number of nX5 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A300506.

%H R. H. Hardin, <a href="/A300503/b300503.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300506.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 07 2018

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Last modified May 14 17:50 EDT 2024. Contains 372533 sequences. (Running on oeis4.)