1221748

Appears in sequences

• Number of (n+1) X (2+1) 0..3 arrays with every 2 X 2 subblock summing to 3 6 or 9.at n=4A251294
• Number of (n+1)X(5+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9.at n=1A251297
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9.at n=16A251300
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9.at n=19A251300