login
Number of 4Xn arrays containing n copies of 0..4-1 avoiding the pattern equal-up in every row and column.
0

%I #5 Aug 12 2016 06:54:17

%S 24,1880,152922,13745475,1301306034,128342085219,13047193985189,

%T 1357312565492416,143782288933148993,15453753021813989744

%N Number of 4Xn arrays containing n copies of 0..4-1 avoiding the pattern equal-up in every row and column.

%C Row 4 of A269336.

%e Some solutions for n=3

%e ..2..3..0. .2..1..1. .0..3..1. .1..2..3. .2..0..2. .0..1..1. .2..0..3

%e ..3..2..1. .3..0..0. .2..0..2. .3..2..3. .1..3..1. .2..2..2. .1..3..3

%e ..3..1..2. .0..1..3. .1..1..0. .2..1..0. .0..3..2. .0..3..3. .0..2..0

%e ..1..0..0. .3..2..2. .3..2..3. .0..1..0. .1..3..0. .1..3..0. .1..2..1

%Y Cf. A269336.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 24 2016