81745

Appears in sequences

• a(n) = 2*a(n-1) + a(n-2) - [a(n-2)/2] - [a(n-4)/2] - [a(n-5)/2] where [k] := floor(k).at n=15A173514
• Number of 5-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-bishop's tours (antidiagonal moves become knight moves) on an n X n board summed over all starting positions.at n=24A187609
• Constant term of the reduction by x^2 -> x+1 of the polynomial p(n,x) defined at Comments.at n=21A192981
• Number of edge-connected components of polygonal cells in the pinwheel tiling up to rotation of the tiling.at n=9A385265