来自在线整数百科全书的问候语!http://oeis.org/ Search: id:a186821 Showing 1-1 of 1 %I A186821 %S A186821 70767,1190637,18829218,315843055,5634207241,99751773733, %T A186821 1783799078413,32322581577916,584495537657334,10594536209194545, %U A186821 192625016377623752,3500057158418808686,63637200466766220870,1157907423273867982529 %N A186821 Half the number of (n+2)X7 binary arrays with each 3X3 subblock having sum 4 or 5 %C A186821 Column 5 of A186825 %H A186821 R. H. Hardin,n,a(n)n=1…95的表%e A186821 Some solutions for 4X7 with a(1,1)=0 %e A186821 ..0..0..1..0..0..1..0....0..0..1..0..1..0..0....0..0..1..0..0..0..1 %e A186821 ..0..1..0..0..1..0..0....0..1..0..0..1..1..0....0..1..1..1..1..1..0 %e A186821 ..0..1..1..0..1..1..0....0..1..1..1..0..1..1....0..1..0..0..1..0..0 %e A186821 ..1..0..1..0..0..1..1....1..0..0..1..0..0..0....0..1..0..0..1..0..0 %K A186821 nonn %O A186821 1,1 %A A186821 _R. H. Hardin_ Feb 27 2011 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE