199999999
domain: N
Appears in sequences
- Smallest number whose digits sum to n-th prime.at n=20A046864
- a(n) is the smallest number k such that the letter "N" appears n times when k is written in English.at n=21A060227
- a(n) = 2*10^(n-1) - 1.at n=8A067272
- Number of palindromes of length <= n.at n=15A070199
- a(n) is the smallest composite number with the sum of digits = the n-th prime number.at n=20A073868
- First column of triangle A093846.at n=8A093847
- Numbers k such that the k-th triangular number contains only digits {0,1,9}.at n=31A119048
- Smallest number whose sum of digits is 2n+1.at n=36A131668
- Smallest number whose sum of digits is 3n+1.at n=24A133264
- Partial sums of A278742.at n=34A280730