200010

Appears in sequences

• a(n+1) is the least integer > a(n) containing all digits of a(n); a(1)=2.at n=27A155890
• Sum of any three adjacent digits of n^2 is a square.at n=42A174397
• Consider a number k with m decimal digits, the prefix p of length m-1 and the suffix s of length m-1. The sequence lists the numbers k such that sigma(k) = sigma(p)*sigma(s) where sigma(x) is the sum of the divisors of x.at n=34A244313
• Concatenate the positions of digits 9, 8,..., 0 in the decimal representation of n, using 1 for the leftmost digit etc., and 0 when the digit does not occur.at n=15A260522
• List of binary words of lengths 0, 1, 2, etc., including empty word, each prefixed by a 2.at n=33A319953