|
%I #5 Mar 31 2012 12:37:16
%S 3,9,9,25,81,25,69,625,625,69,190,4761,12534,4761,190,523,36100,
%T 247002,247002,36100,523,1440,273529,4841210,12539372,4841210,273529,
%U 1440,3965,2073600,94815963,632716336,632716336,94815963,2073600,3965,10918
%N T(n,k)=Number of nXk 0..2 arrays avoiding the pattern z-1 z-1 z in any row or column
%C Table starts
%C ....3........9..........25.............69................190
%C ....9.......81.........625...........4761..............36100
%C ...25......625.......12534.........247002............4841210
%C ...69.....4761......247002.......12539372..........632716336
%C ..190....36100.....4841210......632716336........82169395789
%C ..523...273529....94815963....31901664357.....10662765804288
%C .1440..2073600..1858463962..1610194874799...1385457146717885
%C .3965.15721225.36432515728.81287871720373.180058205739184404
%H R. H. Hardin, <a href="/A207201/b207201.txt">Table of n, a(n) for n = 1..127</a>
%e Some solutions for n=4 k=3
%e ..2..0..1....0..1..2....2..0..2....1..2..2....1..2..2....1..1..0....1..2..1
%e ..0..0..2....1..2..0....1..1..1....2..1..2....0..0..2....1..1..1....1..1..1
%e ..1..2..2....0..1..0....1..0..0....2..2..1....1..2..0....0..1..2....1..0..1
%e ..0..0..2....2..0..2....1..2..2....2..1..1....1..2..1....2..1..2....0..1..0
%Y Column 1 is A206727
%Y Column 2 is A206728
%K nonn,tabl
%O 1,1
%A _R. H. Hardin_ Feb 15 2012
| 