587008

Appears in sequences

• Expansion of (1-x)/(1-2*x^2+2*x^3).at n=24A078025
• a(n) = 2*a(n-2) + 2*a(n-3).at n=25A107383
• Start with a single cell at coordinates (0, 0, 0), then iteratively subdivide the grid into 3 X 3 X 3 cells and remove the cells whose sum of modulo 2 coordinates is 0 or 1; a(n) is the number of cells after n iterations.at n=5A285394