59750
domain: N
Appears in sequences
- First of three consecutive numbers with at least one 3 in their prime signature.at n=7A176350
- Numbers k such that sopfr(k) = tau(k)^2.at n=33A305026
- Starts of runs of 3 consecutive numbers that have an equal number of unitary and nonunitary divisors (A048109).at n=6A335397
- Consider binary words that begin with 1 such that the subword 00, whenever it appears, is followed by 111. Then a(n) counts such words at length n (including those where the string 111 is yet being completed - see Example).at n=20A340217