|
%I #4 Nov 22 2014 22:19:51
%S 81,2160,160000,8750000,937890625,74118870000,9682651996416,
%T 958582547645184,141763707879526656,16346105372357849088,
%U 2632478657451209588736,338880211548064890612480
%N Number of (n+1)X(n+1) 0..2 arrays with nondecreasing sum of every two consecutive values in every row and column
%C Diagonal of A250443
%e Some solutions for n=3
%e ..0..1..1..1....0..1..1..1....0..0..0..1....0..0..1..0....0..0..1..2
%e ..0..0..0..0....0..0..0..0....0..0..0..1....0..2..0..2....0..0..1..0
%e ..0..1..2..2....0..1..1..1....0..2..0..2....2..0..2..1....0..2..1..2
%e ..0..0..2..0....1..0..2..0....0..1..2..1....1..2..1..2....1..0..2..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 22 2014
| 