513867

Appears in sequences

• Number of base 17 circular n-digit numbers with adjacent digits differing by 2 or less.at n=8A124898
• 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, -1, 1), (-1, 0, 1), (1, 0, 1), (1, 1, -1)}.at n=11A149001
• a(n) is the number of prime powers k such that ceiling(log_2(k)) = n.at n=23A304521