login
Number of n X n 0..2 arrays with rows, columns and antidiagonals unimodal and diagonals nondecreasing
0

%I #5 Dec 18 2015 18:18:32

%S 3,54,1116,21334,386495,6621074,108796955,1735753333,27144561576

%N Number of n X n 0..2 arrays with rows, columns and antidiagonals unimodal and diagonals nondecreasing

%C Diagonal of A223933

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 29 2013