594639

Appears in sequences

• Powers of fifth root of 18 rounded down.at n=23A018165
• Powers of fifth root of 18 rounded to nearest integer.at n=23A018166
• a(1) = 9, a(n) = concatenation of two closest factors 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=9A063423