101428

Appears in sequences

• Number of walks of length n on the square lattice that start from (0,0) and do not touch the nonpositive real axis once they have left their starting point.at n=9A053791
• Numbers n such that phi(phi(n)) + sigma(sigma(n)) is a 4th power.at n=38A172464
• a(n) is the number of squares at distance n from the central square of a golden square fractal.at n=13A339124