A279490 - OEIS

A279490

Number of nX4 0..1 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

%I #4 Dec 13 2016 12:19:15

%S 3,18,254,2684,26157,246237,2241332,19885341,172968364,1481176019,

%T 12518566165,104634697841,866300549164,7113499311107,57991161908834,

%U 469750378139503,3783568376847729,30319325084628268,241845032680119474

%N Number of nX4 0..1 arrays with no element equal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

%C Column 4 of A279494.

%H R. H. Hardin, <a href="/A279490/b279490.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A279494.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 13 2016