A298711 - OEIS

%I #4 Jan 25 2018 08:36:34

%S 0,125,22,110,2409,9586,17377,241249,1201122,6055242,45702804,

%T 299335380,1843128506,13177259868,89426659750,604369128394,

%U 4250651593956,29338538378352,203129511477403,1429210885229805,9929275442796545

%N Number of nX7 0..1 arrays with every element equal to 1, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A298712.

%H R. H. Hardin, <a href="/A298711/b298711.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298712.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 25 2018