155341domain: NAppears in sequencesOdd numbers having no odd primes in their Collatz (3x+1) trajectory.at n=29A221475Odd numbers n containing 65536 as the highest power of 2 in their Collatz (3x+1) iteration.at n=35A247716Number of Dyck paths of semilength n such that each level has exactly five peaks or no peaks.at n=18A288112