81787109375
domain: N
Appears in sequences
- Numbers n such that Sum_{k=1..n} d(k) is an integer where d(k) is the decimal fraction 0.k (e.g. d(999)=0.999).at n=18A054464
- a(n) is the smallest number m such that the sum of the first m squares ends in n '0's.at n=12A174245
- a(n) = 10^n - (5^(2^n) mod 10^n).at n=10A216093
- a(n) = 10^n - (5^(2^n) mod 10^n).at n=11A216093
- a(n) = 10^n - (5^(2^n) mod 10^n).at n=12A216093
- a(n) is the smallest number m such that the m-th triangular number ends in n zeros.at n=10A228191
- a(n) is the smallest number m such that the m-th triangular number ends in n zeros.at n=11A228191
- a(n) is the smallest number m such that the m-th triangular number ends in n zeros.at n=12A228191