618192

Appears in sequences

• Numbers m for which Sum_{i=1..k} (1+1/p_i) + Product_{i=1..k} (1+1/p_i) is an integer, where p_i are the k prime factors of m (with multiplicity).at n=19A199767
• a(n) = exp(-1/6) * Sum_{k>=0} (6*k - 1)^n / (6^k * k!).at n=7A337042