login
Number of n X n 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other
0

%I #6 Dec 18 2015 18:17:55

%S 4,2,114,1028,420662,33222962,112920979339

%N Number of n X n 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other

%C Diagonal of A201235

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 28 2011