9227482

Appears in sequences

• Number of (n+2) X 4 0..1 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly three ways, and new values 0..1 introduced in row major order.at n=31A204748
• Convolution of (1,-1,2,-2,3,-3,...) and A000045 (Fibonacci numbers).at n=34A213043
• Number of vertices of type D at level n of the hyperbolic Pascal pyramid PP_(4,5).at n=20A293065