A297462 - OEIS

%I #4 Dec 30 2017 11:13:56

%S 64,299,6888,55713,862112,8800153,116817805,1310421193,16359022199,

%T 190745746116,2322860397083,27514222405770,331710789850250,

%U 3954342819972111,47479319283362042,567478249014805267

%N Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0 or 2 neighboring 1s.

%C Row 6 of A297457.

%H R. H. Hardin, <a href="/A297462/b297462.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A297462/a297462.txt">Empirical recurrence of order 72</a>

%F Empirical recurrence of order 72 (see link above)

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A297457.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 30 2017