# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a298177 Showing 1-1 of 1 %I A298177 #4 Jan 14 2018 09:18:26 %S A298177 0,0,0,0,1,0,0,2,2,0,0,1,0,1,0,0,8,2,2,8,0,0,5,1,8,1,5,0,0,22,6,13,13, %T A298177 6,22,0,0,29,8,27,34,27,8,29,0,0,60,15,43,57,57,43,15,60,0,0,121,22, %U A298177 104,73,87,73,104,22,121,0,0,194,44,220,174,161,161,174,220,44,194,0,0,425,82 %N A298177 T(n,k)=Number of nXk 0..1 arrays with every element equal to 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero. %C A298177 Table starts %C A298177 .0..0..0...0...0...0....0....0....0.....0.....0.....0......0......0......0 %C A298177 .0..1..2...1...8...5...22...29...60...121...194...425....704...1421...2574 %C A298177 .0..2..0...2...1...6....8...15...22....44....82...152....267....486....898 %C A298177 .0..1..2...8..13..27...43..104..220...478...988..2085...4451...9505..20311 %C A298177 .0..8..1..13..34..57...73..174..350...800..1605..3376...7079..15234..32785 %C A298177 .0..5..6..27..57..87..161..361..898..1984..4089..8938..20136..45253.100907 %C A298177 .0.22..8..43..73.161..181..540.1076..2572..5179.11814..27638..63592.145715 %C A298177 .0.29.15.104.174.361..540.1380.2682..6043.12820.28413..61050.133945.294724 %C A298177 .0.60.22.220.350.898.1076.2682.4176.11358.21477.51492.105048.245900.540109 %H A298177 R. H. Hardin, Table of n, a(n) for n = 1..511 %F A298177 Empirical for column k: %F A298177 k=1: a(n) = a(n-1) %F A298177 k=2: a(n) = 3*a(n-2) +2*a(n-3) -2*a(n-4) %F A298177 k=3: a(n) = a(n-1) +2*a(n-2) +2*a(n-5) -4*a(n-6) -8*a(n-7) -a(n-8) +a(n-9) %F A298177 k=4: [order 21] for n>27 %F A298177 k=5: [order 34] for n>40 %F A298177 k=6: [order 67] for n>74 %e A298177 Some solutions for n=7 k=4 %e A298177 ..0..0..1..1. .0..0..1..1. .0..0..0..0. .0..0..0..0. .0..0..1..1 %e A298177 ..0..1..0..1. .1..0..0..1. .0..1..1..0. .0..1..1..0. .0..1..0..1 %e A298177 ..0..1..0..1. .1..1..1..0. .0..1..0..1. .0..1..0..1. .0..1..0..1 %e A298177 ..0..1..0..1. .0..0..0..1. .0..1..0..1. .0..1..0..1. .1..0..1..0 %e A298177 ..0..1..0..1. .0..1..1..0. .0..1..0..1. .0..1..0..1. .1..0..1..0 %e A298177 ..0..1..0..1. .1..0..0..1. .1..0..1..0. .0..1..1..0. .0..1..1..0 %e A298177 ..0..0..1..1. .1..1..1..1. .1..1..0..0. .0..0..0..0. .0..0..0..0 %Y A298177 Column 2 is A297809. %Y A298177 Column 3 is A298141. %Y A298177 Column 4 is A298142. %Y A298177 Column 5 is A298143. %K A298177 nonn,tabl %O A298177 1,8 %A A298177 _R. H. Hardin_, Jan 14 2018 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE