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A301397 Number of nX5 0..1 arrays with every element equal to 2, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 20 2018 11:00:23

%S 0,9,44,446,4857,49325,521514,5457161,57311190,601654211,6316448607,

%T 66317193844,696258824443,7310037380326,76748138985060,

%U 805779765484701,8459893652740792,88820547809627099,932528264893178568

%N Number of nX5 0..1 arrays with every element equal to 2, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A301400.

%H R. H. Hardin, <a href="/A301397/b301397.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A301400.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 20 2018

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Last modified May 19 11:03 EDT 2024. Contains 372683 sequences. (Running on oeis4.)