# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a186806 Showing 1-1 of 1 %I A186806 #5 Mar 31 2012 12:36:06 %S A186806 512,3984,3984,31204,59907,31204,244558,906615,906615,244558,1916364, %T A186806 13730715,26628581,13730715,1916364,15016660,207885695,782510382, %U A186806 782510382,207885695,15016660,117671951,3147544633,22986441710 %N A186806 T(n,k)=Number of (n+2)X(k+2) binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock %C A186806 Table starts %C A186806 .........512............3984.............31204.............244558 %C A186806 ........3984...........59907............906615...........13730715 %C A186806 .......31204..........906615..........26628581..........782510382 %C A186806 ......244558........13730715.........782510382........44618824642 %C A186806 .....1916364.......207885695.......22986441710......2543130767720 %C A186806 ....15016660......3147544633......675297305236....144968185692408 %C A186806 ...117671951.....47657171957....19839195220290...8263791225579948 %C A186806 ...922087441....721577251158...582841090096150.471067696528736345 %C A186806 ..7225552800..10925394777419.17122871714488347 %C A186806 .56620029719.165421364939032 %H A186806 R. H. Hardin, Table of n, a(n) for n = 1..71 %e A186806 Some solutions for 5X4 %e A186806 ..0..0..0..0....0..0..1..0....1..0..0..1....1..0..0..0....1..0..0..0 %e A186806 ..1..0..0..1....1..0..0..0....0..0..0..0....0..0..0..1....1..0..0..1 %e A186806 ..0..0..1..1....0..1..1..0....1..0..1..0....1..0..1..0....0..1..1..1 %e A186806 ..1..1..0..0....0..0..1..0....1..0..1..1....1..1..0..1....0..0..0..0 %e A186806 ..1..1..0..0....1..0..1..0....0..1..0..1....1..1..0..0....1..1..0..1 %K A186806 nonn,tabl %O A186806 1,1 %A A186806 _R. H. Hardin_ Feb 26 2011 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE