87891

Appears in sequences

• Expansion of (1-x)/((1+x)*(1-2*x)*(1-3*x)).at n=10A004054
• Number of walks of length n between two vertices on the same triangular face of a truncated tetrahedron (triangular prism).at n=12A094555
• Number of nX3 0..1 arrays with every element unequal to 0, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=21A317810