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R. H. Hardin, <a href="/A296402/b296402.txt">Table of n, a(n) for n = 1..210</a>
allocated for R. H. Hardin
Number of nX5 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 2 or 3 neighboring 1s.
1, 46, 316, 2868, 35561, 368770, 3939121, 42629909, 457078213, 4916699494, 52878346101, 568417591743, 6111938688947, 65715511636393, 706559717931743, 7596910600110019, 81681361807250151, 878231179494501589
1,2
Column 5 of A296405.
Some solutions for n=5
..1..1..0..1..1. .0..1..1..1..1. .0..0..1..1..0. .0..0..1..1..1
..1..0..0..1..0. .0..1..0..1..1. .0..1..0..1..1. .0..1..0..1..0
..0..1..1..0..0. .0..1..0..0..1. .0..1..0..0..1. .1..1..0..1..1
..1..1..0..1..0. .0..1..0..1..1. .0..1..0..1..0. .1..0..1..0..1
..0..0..1..1..0. .1..1..1..0..0. .1..1..1..0..0. .0..0..1..1..0
Cf. A296405.
allocated
nonn
R. H. Hardin, Dec 11 2017
approved
editing
allocated for R. H. Hardin
allocated
approved