99999992
domain: N
Appears in sequences
- a(n) = 10^n - n.at n=8A024115
- Largest n-digit multiple of n.at n=7A066557
- {Concatenation of n-1 and n+1}/n where n is a member of A069871.at n=15A077192
- Numbers k such that k concatenated with itself gives the product of two numbers which differ by 9.at n=18A116162
- Numbers k such that k * (k+9) is the concatenation of a number m with itself.at n=18A116293
- a(n) = the largest multiple of n with n digits and exactly n divisors; a(n) = 0 if no such number exists.at n=7A182750
- Largest n-digit number missing in first 10^n digits after the decimal point in expansion of Pi.at n=7A260627