9000001

Appears in sequences

• Numbers k such that k^2 contains only digits {0,1,8}, not ending with zero.at n=15A058421
• First n-digit number that occurs in the sequence A085951.at n=6A085952
• a(1) = 1; a(n) is the smallest natural number such that a(n) > a(n-1), and the name of a(n) in English starts with the letter a(n-1) ends with, and a(n) makes the sequence extendable.at n=15A281067