136227

Appears in sequences

• Number of step shifted (decimated) sequences using exactly three different symbols.at n=11A056377
• 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 2; a(n) is the number of cells after n iterations.at n=4A285396