# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a207317 Showing 1-1 of 1 %I A207317 #7 May 17 2013 13:39:57 %S A207317 3,9,9,26,81,26,75,676,676,75,216,5625,15390,5625,216,622,46656, %T A207317 347502,347502,46656,622,1791,386884,7791488,21162579,7791488,386884, %U A207317 1791,5157,3207681,174545777,1274682671,1274682671,174545777,3207681,5157,14849 %N A207317 T(n,k)=Number of nXk 0..2 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal %C A207317 Table starts %C A207317 ....3........9..........26..............75................216 %C A207317 ....9.......81.........676............5625..............46656 %C A207317 ...26......676.......15390..........347502............7791488 %C A207317 ...75.....5625......347502........21162579.........1274682671 %C A207317 ..216....46656.....7791488......1274682671.......205235353935 %C A207317 ..622...386884...174545777.....76655305645.....32960886054362 %C A207317 .1791..3207681..3908531208...4606553380932...5287481507599689 %C A207317 .5157.26594649.87515884741.276789915709747.847996342709895834 %H A207317 R. H. Hardin, Table of n, a(n) for n = 1..180 %e A207317 Some solutions for n=4 k=3 %e A207317 ..2..0..1....2..0..2....0..0..2....2..2..2....2..2..1....2..2..0....2..1..2 %e A207317 ..2..0..2....1..1..1....0..0..2....1..2..1....2..0..2....0..0..2....1..2..1 %e A207317 ..1..0..2....1..0..0....0..0..0....0..2..2....2..2..0....2..0..0....0..2..1 %e A207317 ..1..2..1....1..2..2....1..2..0....0..0..2....0..2..1....1..0..1....1..1..2 %Y A207317 Column 1 is A076264 %Y A207317 Column 2 is A206694 %K A207317 nonn,tabl %O A207317 1,1 %A A207317 _R. H. Hardin_ Feb 16 2012 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE