888888888

Appears in sequences

• a(n) = 8*(10^n - 1)/9.at n=9A002282
• Repdigit - 1 is prime.at n=12A028987
• Append d digits d after each digit d in decimal expansion of n.at n=8A048377
• Smallest multiple of n using only digits 0 and 8.at n=8A078247
• Smallest multiple of n using only digits 0 and 8.at n=17A078247
• Smallest multiple of n using only digits 0 and 8.at n=35A078247
• Smallest multiple of n using all digits of (n-1) at least once and no others; or 0 if no such number exists.at n=8A083958
• Smallest multiple of n using all digits of (n-1) with the same frequency and no others; or 0 if no such number exists.at n=8A083959
• a(n) = A084006(n)^(1/2).at n=28A084007
• a(n) is the least positive integer containing n eights that is divisible by n.at n=8A112907
• Partial sums of A051109.at n=26A117727
• a(10n+m) is the integer with n+m concatenations of the digit m in base 10, 0<=m<=9.at n=17A158849
• a(n) = 111111111 * n.at n=7A172525
• Record values in A048377.at n=7A192686
• In base 10 lunar arithmetic, a(n) is the smallest number than has exactly n different square roots (or -1 if no such number exists).at n=8A202174
• Least positive integer whose decimal digits divide the plane into n+1 regions. Equivalently, least positive integer with n holes in its decimal digits.at n=18A249572
• Least positive integer whose decimal digits divide the plane into n regions (A249572 variant).at n=18A250256
• Least nonnegative integer whose decimal digits divide the plane into n regions.at n=18A250257
• Least nonnegative integer whose decimal digits divide the plane into n regions (A250257 variant).at n=18A250258
• Least positive integer whose decimal digits divide the plane into n regions (version for people who write 2 with a curlicue).at n=18A279193