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A300773 Number of nX5 0..1 arrays with every element equal to 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 12 2018 11:27:02

%S 0,9,32,179,1536,10374,78932,592064,4449947,33577057,252998551,

%T 1907641285,14383151007,108443795304,817656870230,6165008746020,

%U 46483483392723,350480396736512,2642584867743746,19924815133356634

%N Number of nX5 0..1 arrays with every element equal to 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A300776.

%H R. H. Hardin, <a href="/A300773/b300773.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300776.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 12 2018

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Last modified August 19 23:12 EDT 2024. Contains 375310 sequences. (Running on oeis4.)