522598230domain: NAppears in sequencesClosed walks of length n along the edges of a dodecahedron based at a vertex.at n=21A054882Number of walks of length n along the edges of a dodecahedron between two opposite vertices.at n=21A054883Expansion of 1/((1+x)*(1+2*x)*(1-3*x)).at n=19A249992