102908domain: NAppears in sequencesNumber of trees on n nodes with forbidden limbs.at n=10A014271Least number x such that x^n has n digits equal to k. Case k=5.at n=38A285452Number of nX4 0..1 arrays with every element unequal to 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=9A305219