login
Number of nX7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.
1

%I #4 Dec 17 2017 13:16:42

%S 34,705,13275,249329,4733229,89713772,1700240351,32223940011,

%T 610746699603,11575622907479,219395796042481,4158271196618720,

%U 78812946387126526,1493765502846960513,28311790909987224036

%N Number of nX7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.

%C Column 7 of A296635.

%H R. H. Hardin, <a href="/A296634/b296634.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A296635.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 17 2017