30740

Appears in sequences

• a(n) = floor(e^(n/3)).at n=30A214077
• Numbers k such that 7*R_(k+2) - 2*10^k is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=17A257031
• Practical numbers z such that z^2 = x^2 + y^2 for some practical numbers x and y with gcd(x,y,z) = 4.at n=43A294112