%I#8 2018年10月23日12:10:19
%电话:8126070217864621136306567757620045251542413254243365664,
%电话:8687760222789125733696014590425637639797129635927042481143040,
%电话:6321940921630184371241692741632107387375616273842325504
%N(N+1)X(1+1)0..2数组的数目,每个2X2子块的上中位数与其水平和垂直相邻块的上中位数正好相差一。
%H R.H.Hardin,n表,n=1..210的a(n)</a>
%F经验:对于n>9,a(n)=36*a(n-4)+48*a(n-6)。
%F经验公式:x*(81+260*x+702*x^2+1786*x^3+1705*x^4+2576*x^5+1496*x*6+800*x^7+400*x*8)/(1-36*x^4-48*x^6)_科林·巴克,2018年10月23日
%e n=5的一些解决方案:
%e。。2..2....0..0....2..2....2..0....2..2....1..2....0..1....2..2....2..0....2..1
%e。。0..1....1..0....1..1....1..2....0..1....2..0....0..0....1..2....1..2....0..0
%e。。2..0....0..2....0..0....0..0....2..1....1..0....1..2....1..0....0..0....2..0
%e。。0..2....2..1....1..0....1..0....1..2....0..0....0..2....0..0....0..2....0..1
%e。。1..0....0..0....2..1....0..2....0..0....2..1....1..1....2..1....1..0....0..0
%e。。0..0....0..2....2..1....1..2....0..1....2..2....2..2....1..2....2..2....1..1
%A237637的Y列1。
%K nonn公司
%O 1,1号机组
%A R.H.Hardin,2014年2月10日
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