185461

Appears in sequences

• Numbers k such that sopf(k) = (1/2)*(sopf(k+1) + sopf(k-1)), where sopf(x) = sum of the distinct prime factors of x.at n=17A075846
• Expansion of e.g.f. exp( -LambertW(-x*(1+x)^2) ) / (1+x).at n=6A389783