477412domain: NAppears in sequencesKekulé numbers for certain benzenoids.at n=11A110694Numbers k such that k and k^2 use only the digits 1, 2, 4, 7 and 9.at n=24A136998Number of -2..2 arrays x(0..n-1) of n elements with zeroth through n-1st differences all nonzero.at n=11A199937