262088

Appears in sequences

• a(0) = 3, a(1) = 8, a(n+2) = 4*a(n+1) - a(n) - 2.at n=9A102206
• a(n) = ((sqrt(3)+1)^n+(sqrt(3)-1)^n)^2/2^(n+1).at n=10A121401
• Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=3A203915
• Number of (n+2)X6 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=3A203919
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.at n=24A203923
• Numbers whose sum of squarefree divisors and sum of nonsquarefree divisors are both squarefree numbers.at n=34A300984