89643

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=8A063383
• a(n) = 4*p(n-1)*p(n+1) - p(n)^2, where p(k) = k-th prime.at n=38A327447