99699

Appears in sequences

• Numbers having four 9's in base 10.at n=24A043528
• Largest palindrome using minimum number of digits with a digit sum = n.at n=42A070244
• First available increasing palindromes (A002113) found in the decimal expansion of the number e-2 (A001113).at n=7A226487
• a(n) = 10^(2n+1) - 1 - 3*10^n.at n=2A332196