79285domain: NAppears in sequencesa(n) = binary code (shown here in decimal) of the position of natural number n in the beanstalk-tree A218778.at n=45A218614a(n) = binary code (shown here in decimal) of the position of the predecessor of the natural number pair (2n,2n+1) in the compact beanstalk-tree A218782.at n=23A218790