A299803 - OEIS

%I #6 May 27 2021 14:01:54

%S 16,73,123,1059,7013,40015,265422,1763437,11422152,74421281,489442086,

%T 3217820147,21058216893,138150587574,907930558135,5955299849066,

%U 39067741459738,256517031249628,1683518724485183,11046982373058902

%N Number of n X 5 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

%C Column 5 of A299806.

%H R. H. Hardin, <a href="/A299803/b299803.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A299806.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 19 2018