24846540

Appears in sequences

• Number of (n+1)X(3+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9.at n=4A251295
• Number of (n+1)X(5+1) 0..3 arrays with every 2X2 subblock summing to 3 6 or 9.at n=2A251297
• 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=23A251300
• 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=25A251300