%I #4 Jul 03 2015 19:44:33
%S 242,392,1064,2059,2218,5458,12198,16269,30246,71722,114938,186119,
%T 418594,768832,1221808,2484405,4916514,8160850,15213700,30646619,
%U 53913804,95998916,189578558,349488589,616691978,1178428556,2229228408
%N Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000011
%C Column 4 of A259723
%H R. H. Hardin, <a href="/A259719/b259719.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = a(n-2) +7*a(n-3) +7*a(n-4) -6*a(n-5) -22*a(n-6) -26*a(n-7) -9*a(n-8) +33*a(n-9) +46*a(n-10) +28*a(n-11) +10*a(n-12) -29*a(n-13) -39*a(n-14) -16*a(n-15) -14*a(n-16) +4*a(n-17) +17*a(n-18) +a(n-19) +3*a(n-20) +2*a(n-21) -3*a(n-22)
%e Some solutions for n=4
%e ..1..0..0..1..0..0....0..0..0..0..0..0....0..0..1..0..0..0....0..0..1..0..0..0
%e ..1..0..0..1..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..1..0..0..1
%e ..0..0..0..0..0..0....1..1..0..0..1..1....0..0..0..0..0..1....0..0..0..0..0..0
%e ..0..0..0..0..0..0....0..0..0..0..0..0....0..1..1..0..0..0....0..0..0..0..0..0
%e ..0..1..0..0..1..0....0..0..0..0..0..0....0..0..0..0..0..0....0..1..0..0..1..0
%e ..0..1..0..0..1..1....0..1..1..0..0..1....0..0..0..0..0..1....1..1..0..0..0..1
%Y Cf. A259723
%K nonn
%O 1,1
%A _R. H. Hardin_, Jul 03 2015