441475domain: NAppears in sequencesNumber of parts if 3^n is partitioned into parts of size 2^n as far as possible and into parts of size 1^n.at n=18A060692Number of nX5 0..1 arrays with every element equal to 0, 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.at n=19A298491