5242569

Appears in sequences

• Number of n-step spiral self-avoiding walks on hexagonal lattice, where at each step one may continue in same direction or make turn of 2*Pi/3 counterclockwise.at n=71A000511
• Composite squarefree numbers n such that p(i)+9 divides n-9, where p(i) are the prime factors of n.at n=25A225719