183404

Appears in sequences

• Expansion of (1-4x)/(1-8x+11x^2).at n=7A108404
• Triangle read by rows: T(n,k) = 4*T(n-1,k-1) + T(n,k-1) with T(2*m,0) = 0 and T(2*m+1,0) = 5^m.at n=43A292466