A299051 - OEIS

%I #4 Feb 01 2018 14:22:48

%S 21,348,1542,76068,953445,29176924,888675946,23405238642,693920505214,

%T 21037340897708,603764830153053,17934063108751557,534096869604892352,

%U 15674627896951182550,464308514446686398318,13757814178967296681530

%N Number of nX7 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

%C Column 7 of A299052.

%H R. H. Hardin, <a href="/A299051/b299051.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A299052.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 01 2018