A302524 - OEIS

%I #4 Apr 09 2018 09:21:50

%S 2,10,42,168,902,3256,15852,77904,314276,1506894,7035934,30537794,

%T 143024948,655833426,2937151450,13568476862,61920768478,280707441628,

%U 1287994621032,5873565899442,26746065104754,122342967545180

%N Number of nX4 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 4 of A302528.

%H R. H. Hardin, <a href="/A302524/b302524.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A302524/a302524.txt">Empirical recurrence of order 72</a>

%F Empirical recurrence of order 72 (see link above)

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A302528.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 09 2018