54508

Appears in sequences

• Integer part of square root of n-th Fibonacci number.at n=47A061287
• 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, 1), (-1, 0, 0), (0, 1, 1), (1, -1, 1), (1, 1, -1)}.at n=9A149054
• Number of leaf-balanced rooted plane trees with n nodes.at n=15A304175