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A188562 Number of nX4 binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally 1

%I #5 Mar 31 2012 12:36:12

%S 13,169,1383,13306,127951,1204078,11433452,108485757,1028265705,

%T 9752393774,92483653644,876991515012,8316617769514,78866430165460,

%U 747888040870634,7092226692541037,67255536562092087,637783755852399275

%N Number of nX4 binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally

%C Column 4 of A188567

%H R. H. Hardin, <a href="/A188562/b188562.txt">Table of n, a(n) for n = 1..200</a>

%F Empirical: a(n)=a(n-1)+30*a(n-2)+353*a(n-3)+1018*a(n-4)+2330*a(n-5)-4974*a(n-6)-12513*a(n-7)-48160*a(n-8)+76038*a(n-9)-1804*a(n-10)+459554*a(n-11)-893573*a(n-12)+1064820*a(n-13)-2834353*a(n-14)+4416849*a(n-15)-4991019*a(n-16)+7852216*a(n-17)-9539748*a(n-18)+8974081*a(n-19)-11030703*a(n-20)+11117467*a(n-21)-8269326*a(n-22)+8553264*a(n-23)-7572189*a(n-24)+4171369*a(n-25)-3707495*a(n-26)+2986282*a(n-27)-797205*a(n-28)+535762*a(n-29)-671915*a(n-30)+108970*a(n-31)-20353*a(n-32)+102061*a(n-33)-15881*a(n-34)-3491*a(n-35)-10455*a(n-36)+1665*a(n-37)+582*a(n-38)+709*a(n-39)-121*a(n-40)-40*a(n-41)-30*a(n-42)+5*a(n-43)+2*a(n-44)+a(n-45)

%e Some solutions for 3X4

%e ..0..1..0..1....0..0..0..1....1..0..0..0....0..0..1..1....0..0..1..0

%e ..0..1..0..0....1..0..0..0....1..1..0..1....1..0..0..0....0..0..1..1

%e ..1..0..1..1....1..1..0..0....0..0..0..1....0..1..0..0....0..1..0..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 04 2011

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Last modified April 24 19:06 EDT 2024. Contains 371962 sequences. (Running on oeis4.)