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A300920 Number of nX5 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 15 2018 18:49:57

%S 1,40,290,4066,48588,640673,8265835,108469760,1419225976,18612718736,

%T 243965442778,3199006474569,41943406467118,549970038257539,

%U 7211211285768759,94554378260472599,1239807002239604003

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

%C Column 5 of A300923.

%H R. H. Hardin, <a href="/A300920/b300920.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300923.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 15 2018

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Last modified April 25 12:33 EDT 2024. Contains 371969 sequences. (Running on oeis4.)