|
%I #5 Feb 17 2014 10:48:09
%S 256,1910,14429,109386,828750,6261150,47346273,358316792,2711887788,
%T 20506077144,155139948464,1173585528600,8880284390128,67163140049616,
%U 508174004578308,3843778132646744,29083916585165508,219977779917187008
%N Number of (n+1)X(1+1) 0..3 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 1 of A238063
%H R. H. Hardin, <a href="/A238058/b238058.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 2348*a(n-4) +50196*a(n-6) +164236*a(n-8) -42860*a(n-10) +2752240*a(n-12) -2760128*a(n-14) +10991872*a(n-16) -60822016*a(n-18) -31266816*a(n-20) +26937344*a(n-22) +27664384*a(n-24) +6701056*a(n-26)
%e Some solutions for n=4
%e ..3..1....2..2....1..0....0..0....0..1....0..1....2..0....1..3....1..0....0..1
%e ..0..2....2..1....0..3....3..0....1..3....2..2....0..3....0..0....1..3....0..3
%e ..0..3....3..2....2..0....3..2....0..2....0..2....1..2....2..1....2..0....0..2
%e ..2..3....1..1....3..3....0..0....1..0....1..0....1..2....2..2....0..1....3..3
%e ..1..2....3..1....1..1....1..3....3..0....2..3....0..1....1..1....0..1....3..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 17 2014
| 