327552

Appears in sequences

• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, -1), (1, -1, -1), (1, 1, 1)}.at n=12A149078
• Number of squares added at the n-th generation of a symmetric (with 45-degree angles), non-overlapping Pythagoras tree.at n=30A276677