680872

Appears in sequences

• Number of (n+1)X(1+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.at n=6A236980
• Number of (n+1)X(7+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.at n=0A236986
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.at n=21A236987
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.at n=27A236987
• Number of Dean words of length n, i.e., squarefree reduced words over {0,1,2,3}.at n=29A343421