94209

Appears in sequences

• Main diagonal of polygonal lucky array defined in A128511.at n=21A128947
• Number of n X 3 0..1 arrays with no occurrence of three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..1 introduced in row major order.at n=10A204192
• a(n) = 2*a(n-1) + 2^(n+1) - 1, a(0) = 0.at n=12A392083