16789497

Appears in sequences

• 1/8 the number of (n+1)X3 0..3 arrays with all 2X2 subblock sums the same.at n=11A184022
• 1/9 the number of (n+1) X (n+1) 0..2 arrays with all 2 X 2 subblocks having the same four values.at n=21A184040