A300933 - OEIS

%I #4 Mar 16 2018 08:54:26

%S 8,50,143,505,1534,4781,15292,48838,158036,513942,1667199,5414178,

%T 17564422,56945634,184689939,599062331,1943671897,6307957298,

%U 20474330692,66462754716,215762437471,700476249766,2274214050189,7383913075835

%N Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 4 of A300937.

%H R. H. Hardin, <a href="/A300933/b300933.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A300933/a300933.txt">Empirical recurrence of order 95</a>

%F Empirical recurrence of order 95 (see link above)

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300937.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 16 2018