990099

Appears in sequences

• Divisors of 99999999.at n=40A027890
• Terms of A088753 that are not terms of A063048.at n=2A089521
• Numbers k such that k*(k+5) gives the concatenation of two numbers m and m-4.at n=12A116261
• Numbers m such that the largest digit in the decimal expansion of 1/m is 1.at n=35A333402
• Proceeding from left to right, between any two consecutive digits (d_i, d_i+1) of an integer k, write down apart the lacking consecutive digits, in increasing order if d_i <d_i+1 or decreasing order if d_i>d_i+1. If abs(d_i - d_i+1) = 0 or 1 no digit is added. Sequence lists integers k that divide such resulting numbers.at n=9A381732