62805domain: NAppears in sequencesSum of digits of n-th term in Look and Say sequence A005150.at n=37A004977a(n) = 4*a(n-1) + 1, a(1) = 15.at n=6A072201Numbers n for which one step of the Collatz iteration (3n+1)/2^r gives rise to values 59,53,47,41,35,29,23,17,11 and 5 for r=1,3,5,..,19.at n=6A072253