57239

Appears in sequences

• Numbers k such that k + sum of its prime factors = (k+1) + sum of its prime factors.at n=41A020700
• (Terms in A028286)/2.at n=46A051359
• 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=23A071143
• Expansion of e.g.f. x*exp(4*x)*cosh(x).at n=7A082135
• Numbers k such that 2^(k+1) == 1 (mod k).at n=34A187787
• Number T(n,k) of entries in the k-th last blocks of all set partitions of [n]; triangle T(n,k), n>=1, 1<=k<=n, read by rows.at n=50A286416
• 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=37A383728