27388

Appears in sequences

• Numbers k such that lcm(1,2,3,...,k)/13 equals the denominator of the k-th harmonic number H(k).at n=14A112818
• Composite numbers whose multiplicative persistence is 6.at n=37A199996
• Expansion of the series reversion of Sum_{k>=1} x^k*k*Product_{p|k, p prime} (1 + 1/p).at n=6A292875
• a(n) = (prime(n)+1) * prime(n+1).at n=37A345727