387324

Appears in sequences

• Number of (n+1)X(n+1) 0..1 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=3A203372
• Number of (n+1) X 5 0..1 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements.at n=3A203374
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=24A203378
• Expansion of g.f. A(x) satisfying A(x)^2 = A( x*A(x) + x*A(x)^2 + x*A(x)^3 ).at n=11A376230