198792
domain: N
Appears in sequences
- Numbers n such that there exists an x!=n that makes {n,n,x} an amicable multiset.at n=15A259302
- Abundant numbers n such that sigma(sigma(n) - 2*n) = sigma(n).at n=17A292365
- Place n equally spaced points around the circumference of a circle and then, for each pair of points, draw two distinct circles, whose radii are the same as the first circle, such that both points lie on their circumferences. The sequence gives the total number of regions formed.at n=35A371374
- Integers k such that there exists an integer 0<m<k such that sigma(k) = sigma(m) = m + 2*k.at n=6A383239