329881

Appears in sequences

• a(1) = 6, a(n) = concatenation of two closest divisors of a(n-1) whose product equals a(n-1) or if a(n-1) is a prime then the concatenation of 1 and a(n-1).at n=9A063383
• Least number k > 2 such that (k!+n)/(k+n) is an integer, or 0 if no such k exists.at n=9A242707