1704794

Appears in sequences

• Numbers n such that sum of distinct primes dividing n is divisible by the largest prime dividing n. Also n has exactly 6 distinct prime factors and n is squarefree.at n=14A071145
• a(n) = C(2n-1,n) + C(2n+1,n+1) - C(0,n).at n=11A165205
• Numbers n such that sigma(n)/phi(n) = 25/4, where sigma = A000203, phi = A000010.at n=21A165629