199981

Appears in sequences

• Numbers k equal to the number of 1's in the decimal digits of all numbers <= k.at n=2A014778
• First term of a run of 10 consecutive numbers such that for each m in the 10-tuple exactly m 1's are used in writing out all numbers 1 through m.at n=0A094799
• Structured disdyakis dodecahedral numbers (vertex structure 7).at n=30A100162
• a(n) is the smallest number x > 1 such that n appears as a substring of the decimal representations of the numbers [0..x] exactly x times.at n=0A163500
• Numbers k such that the number of times digit 'm' used for writing the decimal representation between 1 to k is equal to k for at least one value of m in the range m = 1 to 9.at n=2A216400
• First quadrisection of A332843.at n=35A330522
• Base-ten n containing a digit making its n-th appearance in the list of consecutive positive integers.at n=1A339752
• Smallest k > 1 such that the total number of digits "1" required to write the numbers 1..k in base n is equal to k.at n=8A365097