%I#4 2014年2月10日18:11:02
%S 17862356148820122816444059761010414168222940850502,
%电话:708281114681495402525103541405573407477001262501770700,
%电话:27867003738500063127508853500139335001869250031563750442675006967500
%N(N+1)X(4+1)0..2个数组的数目,每个2X2子块的上中位数与其水平和垂直相邻块相差正好一
%A237637第4列
%H R.H.Hardin,n表,n=1..210的a(n)</a>
%F经验:n>14时,a(n)=5*a(n-4)
%e n=5的一些解决方案
%e。。0..0..0..1..2....2..2..1..0..1....2..2..1..0..1....1..1..2..0..0
%e。。2..1..0..1..2....1..0..0..0..2....1..0..0..0..2....0..2..1..0..1
%e。。0..2..0..0..0....1..0..1..2..1....2..0..1..2..1....2..0..0..0..2
%e。。0..1..2..1..0....0..0..2..0..0....0..0..2..0..0....1..0..1..2..1
%e。。0..0..0..2..1....1..2..1..0..1....1..2..1..0..1....0..0..2..0..0
%e。。2..1..0..1..2....2..0..0..0..1....2..0..0..0..2....1..2..1..0..1
%K nonn公司
%O 1,1
%A R.H.Hardin,2014年2月10日
|