56823

Appears in sequences

• Numbers n such that (i) the sum of the distinct primes dividing n is divisible by the largest prime dividing n and (ii) n has exactly 4 distinct prime factors and (iii) n is squarefree.at n=22A071143
• a(n) = n*A007504(n)/2 = n*(sum of first n primes)/2.at n=39A156778
• Number of involutions of length n having exactly n inversions.at n=16A214086
• Numbers k such that omega(k) = 4 and the largest prime factor of k equals the sum of its remaining distinct prime factors, where omega(k) = A001221(k).at n=36A383728