81010

Appears in sequences

• a(1) = 1; a(n+1) is the smallest number > a(n) which differs from it at every digit.at n=43A068860
• The sequence alternates even and odd integers but also even and odd digits; it is monotonically increasing and a(n) is always the smallest integer fitting the pattern.at n=24A137667
• a(1) = 1; thereafter a(n) is always the smallest integer > a(n-1) not leading to a contradiction, such that any six consecutive digits in the sequence sum up to a prime.at n=26A152606