A282228 - OEIS

A282228

Number of nX4 0..2 arrays with no element equal to more than four of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

%I #4 Feb 09 2017 09:33:28

%S 0,0,9506,1077872,107299718,9825363032,858207069508,72625487040016,

%T 6007728913623056,488523634696859056,39196259623189234184,

%U 3111246267613100340408,244789484044223612860832

%N Number of nX4 0..2 arrays with no element equal to more than four of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

%C Column 4 of A282230.

%H R. H. Hardin, <a href="/A282228/b282228.txt">Table of n, a(n) for n = 1..78</a>

%e Some solutions for n=3

%e ..0..1..0..2. .0..1..1..0. .0..0..1..0. .0..0..1..2. .0..1..0..2

%e ..0..0..0..2. .2..0..0..2. .0..0..2..1. .1..2..2..2. .0..0..0..2

%e ..0..2..0..1. .2..0..0..0. .0..1..0..0. .0..2..0..2. .0..1..0..0

%Y Cf. A282230.

%K nonn

%O 1,3

%A _R. H. Hardin_, Feb 09 2017