A298628 - OEIS

%I #6 Sep 03 2022 22:33:40

%S 0,104,2880,71334,4228781,193309200,9557110072,471778534219,

%T 23254989974319,1151387446628951,56934303336591137,

%U 2817505489516999198,139419988171524739756,6899299591626979177626,341425278258241925272274

%N Number of n X 7 0..1 arrays with every element equal to 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A298629.

%H R. H. Hardin, <a href="/A298628/b298628.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298629.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 23 2018