83271

Appears in sequences

• Numbers n such that sopf(n) = sopf(n+1) - sopf(n-1), where sopf(x) = sum of the distinct prime factors of x.at n=14A076525
• a(n) = 4*n^3 - 6*n^2 + 6*n - 2 + (-1)^n.at n=27A382973