86242

Appears in sequences

• Numbers n such that sopf(n) = sopf(n-1) + sopf(n-2), where sopf(x) = sum of the distinct prime factors of x.at n=16A075565
• Numbers k such that 2^(k+1) - 1 is prime.at n=27A090748
• Exponents m such that 1-A065395(2^m) is a power of 2, where A065395(n) = sigma(phi(n)) - phi(sigma(n)).at n=32A092591
• a(n) = 4 + 8*n + 10*n^2 + 4*n^3.at n=27A100207
• Numbers k such that (58*10^k + 329)/9 is prime.at n=22A294570
• Numbers k such that k + A224787(k) is a square.at n=30A386640