61679domain: NAppears in sequencesNumbers k whose trajectory under the Reverse and Add! operation carried out in base 16 does not reach a palindrome and (presumably) does not join the trajectory of any term m < k.at n=23A344119Number of partitions of the (n+2)-multiset {0,...,0,1,2} with n 0's into distinct multisets.at n=39A346822