55727

Appears in sequences

• Fifth diagonal of triangle A064094.at n=22A064096
• Expansion of (1-x)/(1-x-x^2+2*x^3).at n=48A078011
• a(n+2) = a(n+1) + a(n) + A*t^n, with A = 1 and t = -2.at n=18A224508
• Number of nX7 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=3A302321
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=48A302322
• Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=6A302325