470736

Appears in sequences

• a(0) = 1. a(n+1) = sum{k=0 to n} a(n-k)*a(ceiling(k/2)).at n=18A127681
• Number of (n+1)X4 0..2 arrays with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order.at n=3A209892
• Number of (n+1)X5 0..2 arrays with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order.at n=2A209893
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order.at n=17A209897
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having two distinct values, and new values 0..2 introduced in row major order.at n=18A209897