93749

Appears in sequences

• a(n) = n*5^n - 1.at n=5A064751
• a(n) = 5^(prime(n) - 1) + 5^prime(n) - 1.at n=3A098117
• Golden semiprimes: a(n)=p*q and abs(p*phi-q)<1, where phi = golden ratio = (1+sqrt(5))/2.at n=22A108540
• Nonprimes of the form n*(n-1)^n - 1.at n=2A110709
• Number of free poly-[4.6.12]-tiles (holes allowed) with n cells (division into triangles is significant).at n=14A197462
• a(n) = 6*5^n-1.at n=6A198764
• Indices of prime squares in A381019.at n=36A381095