1617181920

Appears in sequences

• Partition the concatenation 1234567...of natural numbers into successive strings which are multiples of 5, all different and > 5. (0 never taken as the most significant digit.)at n=3A077298
• Smallest multiple of n that is a concatenation of (increasing) natural numbers starting with(n+1).at n=14A077310
• Decimal concatenation of the 5 numbers n,n+1,n+2,n+3,n+4.at n=15A375692