|
%I #4 Aug 24 2015 11:00:06
%S 336,484,754,769,816,1286,1510,1615,2362,3215,3431,4393,7048,7780,
%T 8410,13211,16608,17829,24668,36190,39242,46637,73624,86018,93335,
%U 138721,186633,201052,260339,393430,441304,504693,773636,962188,1043739,1459993
%N Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00001011.
%C Column 4 of A261553.
%H R. H. Hardin, <a href="/A261551/b261551.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 4*a(n-7) +4*a(n-10) +2*a(n-13) -3*a(n-14) -2*a(n-17) +a(n-20) -4*a(n-21) -4*a(n-23) -8*a(n-24) -a(n-26) -6*a(n-27) +3*a(n-28) +3*a(n-34) +2*a(n-35) +2*a(n-38) for n>44
%e Some solutions for n=4
%e ..0..0..0..0..0..0....0..0..0..0..0..0....1..0..0..1..0..0....1..1..0..0..0..0
%e ..0..1..0..0..0..1....0..0..1..0..0..1....0..0..0..0..0..0....0..0..0..0..0..1
%e ..0..0..1..0..0..0....0..1..0..0..0..0....1..0..0..0..0..0....1..0..0..0..1..0
%e ..0..0..0..0..0..1....0..0..0..0..0..0....0..1..0..0..1..0....0..1..0..0..0..1
%e ..0..0..0..0..0..0....0..0..0..0..1..0....0..0..0..0..0..1....0..0..0..0..0..0
%e ..0..0..1..0..1..1....1..0..0..1..0..1....0..0..0..0..0..1....0..0..0..0..1..1
%Y Cf. A261553.
%K nonn
%O 1,1
%A _R. H. Hardin_, Aug 24 2015
|
